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| Subject: | Biology |
| Topic: | Anatomy |
| Views: | 99,779 |
Anatomy & Physiology: Crash Course with Hank Green
Video Lectures
Displaying all 47 video lectures.
Lecture 1 Play Video |
Introduction to Anatomy & Physiology You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** In this episode of Crash Course, Hank introduces you to the complex history and terminology of Anatomy & Physiology. -- Table of Contents: Anatomy: The Structure of Parts 2:34 Physiology: How Parts Function 3:50 Complementarity of Structure & Function 4:09 Hierarchy of Organization 4:20 Directional Terms 7:27 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse |
Lecture 2 Play Video |
Tissues, Part 1 •••SUBBABLE MESSAGE••• TO: Jordan Schoonover FROM: Mom, Dad & Madison Happy Birthday Jordan! We love you sweetheart!! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** In this episode of Crash Course Anatomy & Physiology, Hank gives you a brief history of histology and introduces you to the different types and functions of your body's tissues. -- Table of Contents: Nervous, Muscle, Epithelial & Connective Tissues 1:23 History of Histology 2:07 Nervous Tissue Forms the Nervous System 5:17 Muscle Tissue Facilitates All Your Movements 7:00 Identifying Samples 9:03 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse |
Lecture 3 Play Video |
Tissues, Part 2 - Epithelial Tissue •••SUBBABLE MESSAGE••• TO : Phoebe and James McMullan FROM : Dad Continue being awesome Phoebe & James from John & Hank! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** Today on Crash Course Anatomy & Physiology, Hank breaks down the parts and functions of one of your body's unsung heroes: your epithelial tissue. -- Table of Contents: Epithelial Tissue Creates Inner & Outer Boundaries 2:19.3 Layering: Simple or Stratefied 5:26 Shape: Squamous, Cuboidal, or Columnar 3:34.5 Epithelial Cells Are Polar 7:17.4 Apical & Basal Sides 7:22 Selectively Permeable 7:43 Glandular Epithelial Tissue Forms Endocrine & Exocrine Glands 8:20.3 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse |
Lecture 4 Play Video |
Tissues, Part 3 - Connective Tissues •••SUBBABLE MESSAGE••• TO: Ashley FROM: Fee Happy birthday nerd also I love you lots and lots *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** On today's episode of Crash Course Anatomy & Physiology, Hank continues our exploration of tissues, with an introduction to your connective tissues. -- Table of Contents: Four Types of Connective Tissue 2:34.2 All Develop From Mesenchyme 3:29.5 Different Degrees of Blood Flow 3:45.7 Extracellular Matrix Full of Ground Substance and Fibers 3:59.4 Blast, Cyte, and Immune Cell Types 6:45.4 Marfan Syndrome Affects Connective Tissue 8:31.3 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse |
Lecture 5 Play Video |
Tissues, Part 4 - Types of Connective Tissues •••SUBBABLE MESSAGE••• TO: the world. FROM: Laura Love Rathbun Learning is the best thing to do with your you! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** Today Hank wraps up our look at Connective Tissues with a discussion of its various types and a breakdown of what you can and can't easily break down. Also chicken. -- Table of Contents: Loose and Dense Connective Tissue 2:10.4 Areolar, Adipose, Reticular, Tendons, Ligaments, Dense Irregular, and Dense Elastic Tissue 2:54.5 Three Cartilage Types, Spongy and Compact Bone Connective Tissue 5:29 Blood is a Connective Tissue Type 7:14.1 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse |
Lecture 6 Play Video |
The Integumentary System, Part 1: Skin Deep •••SUBBABLE MESSAGE••• TO: Ciaran FROM: your sister Jillian Happy birthday! Hope you enjoy being immortalized via doobly-doo! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** Anatomy & Physiology continues with a look at your biggest organ - your skin. -- Table of Contents: All About Skin 0:22 Epidermis, Dermis, & Hypodermis 1:30 Melanin And Keratin Cells 2:15 Ensure You Get A Good Tattoo 8:01 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse |
Lecture 7 Play Video |
The Integumentary System, Part 2: Skin Deeper •••SUBBABLE MESSAGE••• TO: Helle Søndergaard FROM: Martin Søndergaard Congratulations for finishing first semester on physiotherapy! I'm so proud! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** Today Hank wraps up this look at your integumentary system and all the hard work it does protecting you from and helping you interact with the world around you. -- Table of Contents: Protects Your Body 1:25 Senses the Outside World 1:42 Helps Excrete Waste 2:17 Stores Blood 2:43 Regulates Temperature 2:59 Makes Vitamin D 5:18 Indicates Signs of Poor Health 3:55 How Your Hair & Nails Grow 5:57 The Difference Between Eccrine and Apocrine Sweat Glands 7:07 Sebaceous (Oil) Glands 8:17 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse |
Lecture 8 Play Video |
The Nervous System, Part 1 •••SUBBABLE MESSAGE••• TO: Kerry FROM: Cale I love you with all my ha-art. Deadset. *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** Today Hank kicks off our look around MISSION CONTROL: your nervous system. -- Table of Contents: Sensory Input, Integration and Motor Output 1:36 Organization of Central and Peripheral Systems 2:16 Glial Cells 3:54 Role, Anatomy and Function of Neuron Types 5:23 Structure and Function of Neurons 6:20 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse |
Lecture 9 Play Video |
The Nervous System, Part 2: Action! Potential! •••SUBBABLE MESSAGE••• TO: Carla FROM: Christopher Next stop is whenever. Just be like, "stop." *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** What do you and a sack of batteries have in common? Today, Hank explains. -- Table of Contents: Ion Channels Regulate Electrochemistry to Create Action Potential 4:51 Resting State 3:22 Depolarization 6:09 Repolarization 7:35 Hyperpolarization 8:00 -- CRASH COURSE KIDS! http://www.youtube.com/crashcoursekids Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse |
Lecture 10 Play Video |
The Nervous System, Part 3: Synapses! •••SUBBABLE MESSAGE••• TO: NerdFighteria FROM: Dave at DTXC.CO Cycling t-shirts at DTXC.CO. Don't give up the Road! DFTBA! *** Subbable Co-Sponsors: Logan Sanders https://www.facebook.com/perrylogans Dr. Boyev http://youtube.com/taichiknees *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** We continue our tour of the nervous system with a look at synapses and the crazy stuff cocaine does to your body. -- Table of Contents: Electrical Synapses Use Ion Currents Over Gap Junctions to Transmit Neurological Signals 2:56 Chemical Synapses Turn Electrical Signals Into Chemical Ones 4:01 Chemical Synapses Use Neurotransmitters 5:14 Effects of Cocaine In the Electrochemical System 7:44 -- CRASH COURSE KIDS! http://www.youtube.com/crashcoursekids Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse |
Lecture 11 Play Video |
Central Nervous System Today Hank talks about your central nervous system. In this episode we'll explore how your brain develops and how important location is for each of your brain's many functions. Table of Contents Central Nervous System, Location and Brain Function 1:48 Brain Development 3:21 Neural Tube 3:27 Three Primary Vesicles 3:37 Four Adult Structures and Their Basic Functions 4:17 *** Crash Course is now on Patreon! You can support us directly (and, until April 30th, have your contributions matched by Patreon!) by signing up at http://www.patreon.com/crashcourse ***SUBBABLE MESSAGES*** TO: Clay Compton FROM: Bill Compton Happy birthday, Dad! -- TO: My Psychology Students FROM: Dr. Caitlin Faas Any observant eyes catching this message? We love Crash Course! ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Creatrix Tiara Dr. Sarah Hinzman Caroline Haas Mason R Norris Alton Toth of Sechelt Rodrigo Groppa Sönke Rebecca Karger Gregle Ariana Flewelling (@EdTechAri) -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 12 Play Video |
Peripheral Nervous System It is now time to meet the system that helps your crazy brain stay in touch with the outside world. We follow up last week's tour of the central nervous system with a look at your peripheral nervous system, its afferent and efferent divisions, how it processes information, the reflex arc, and what your brain has to say about pain. Table of Contents Peripheral Nervous System 0:38 Afferent and Efferent Divisions 5:42 Information and Responses to Pain 3:12 Five Steps of the Reflex Arc 4:35 Different Kinds of Reflexes 6:44 What the Brain Says About Pain 8:09 *** Crash Course is now on Patreon! You can support us directly (and, for the next month, have your contributions matched by Patreon!) by signing up at http://www.patreon.com/crashcourse ***SUBBABLE MESSAGES*** TO: Brayden and Cody FROM: Dad For my favourite sons. Remember that Science Rocks!! -- TO: CraftLit Listeners FROM: Heather at CraftLit Big Hugs to CraftLit Fans Who (also) Love Crash Course! ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Dan Rajan Josh Greenberg @wordlessrage Tanmay Sheth Chriztopher North Teodora Miclaus Jessica Baker Julie Anne Mathieu Moti Lieberman Leanne Gover www.justplainsomething.com -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 13 Play Video |
Autonomic Nervous System Hank takes you on a tour of your two-part autonomic nervous system. This episode explains how your sympathetic nervous system and parasympathetic nervous system work together as foils, balancing each other out. Their key anatomical differences - where nerve fibers originate and where their ganglia are located - drive their distinct anatomical functions, making your sympathetic nervous system the "fight or flight" while your parasympathetic nervous system is for "resting and digesting." -- Table of Contents The Basic Two-Part System of the Autonomic Nervous System 0:48 Sympathetic Nervous System 2:33 Parasympathetic Nervous System 2:54 Their Nerve Fibers Originate in Different Parts of the Body 3:22 Sympathetic Ganglia Are Close to the Spinal Cord 4:36 Parasympathetic Ganglia Are Close to Their Effectors 4:59 *** Crash Course is now on Patreon! You can support us directly (and, until April 30th, have your contributions matched by Patreon!) by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Simun Niclasen, Brad Wardell, Roger C. Rocha, Jan Schmid, Elliot Beter, Nevin Spoljaric, Sandra Aft, SR Foxley, Jessica Simmons, Stefan R. Finnerup, Jason A Saslow, Robert Kunz, Jessica Wode, Mike Drew, Steve Marshall, Anna-Ester Volozh, Christian Ludvigsen, Jeffrey Thompson, James Craver ***SUBBABLE MESSAGES*** TO: SEM Students FROM: Mrs. S You are confident and courageous! I believe in you! DFTBA! -- TO: Zachary FROM: She who gave you life! You, like the Mongols, will always be the exception. ***EPISODE CO-SPONSORS*** Link Kelly Naylor - http://www.aertenart.com Tim Webster Steven Meekel ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Caitlin Steinert, BryanGriffith.com, Maia McGuire, That one guy from Midland who teaches science at highschool, Michael Longwell, Justice H, Martha (splicegrrl), Casey Rule, Manuel Kovats, and @simplscientist -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 14 Play Video |
Sympathetic Nervous System Hank tries not to stress you out too much as he delves into the functions and terminology of your sympathetic nervous system. -- Table of Contents Sympathetic Nervous System Controls the Body's Stress Response 0:26 How Signals Travel to Effectors 1:48 Acetylcholine in the Ganglion 3:55 Norepinephrine at the Effector 4:42 Norepinephrine and Epinephrine Are Secreted as Hormones 5:35 Alpha Receptors Cause Smooth Muscles to Constrict 7:14 Beta Receptors Cause Smooth Muscles to Relax 7:27 *** Crash Course is now on Patreon! You can support us directly (and, until April 30th, have your contributions matched by Patreon!) by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Simun Niclasen, Brad Wardell, Roger C. Rocha, Jan Schmid, Elliot Beter, Nevin Spoljaric, Sandra Aft, SR Foxley, Jessica Simmons, Stefan R. Finnerup, Jason A Saslow, Robert Kunz, Jessica Wode, Mike Drew, Steve Marshall, Anna-Ester Volozh, Christian Ludvigsen, Jeffrey Thompson, James Craver ***SUBBABLE MESSAGES*** TO: Ariela FROM: Gavi I love you so much, stay awesome as always! -- TO: Josiah P. FROM: Amy P. I love you! ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Pankaj Gurung Kelley Culp Joshua McKee Amory Olson: Kasson-Mantorville High School Science Instructor Jack Thakar Arrow Worthy Magnus "Krox" Krokstad Rachel Lee Brian J. Rolf Sylien -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 15 Play Video |
Parasympathetic Nervous System This week we are looking at your parasympathetic division, which is the "resting and digesting" unit. Unfortunately, learning about this de-stressing division also involves a whole lot of memorization. Don't worry, though - we've got some mnemonic devices to help you out! -- Table of Contents Parasympathetic Nervous System 0:40 Structural Differences from the Sympathetic System 1:41 Twelve Cranial Nerves 4:02 Vagus Nerve 6:40 *** Crash Course is now on Patreon! You can support us directly (and,until April 30th, have your contributions matched by Patreon!) by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Simun Niclasen, Brad Wardell, Roger C. Rocha, Jan Schmid, Elliot Beter, Nevin Spoljaric, Sandra Aft, SR Foxley, Jessica Simmons, Stefan R. Finnerup, Jason A Saslow, Robert Kunz, Jessica Wode, Mike Drew, Steve Marshall, Anna-Ester Volozh, Christian Ludvigsen, Jeffrey Thompson, James Craver ***SUBBABLE MESSAGES*** TO: Laura Hewett FROM: Amy Paez Greetings from the other side of the world! DFTBA -- TO: Wesley FROM: G Distance is created by the Desert Otherworld, therefore we shall not be destroyed. ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Alex Lee CPA Liz Siron Kathryn "Fallout Shelter" Plimpton Daniel McLaughlin Kate Plimpton Thanks Zujus! Charlie Kuski Historyboobs Rachel Lee Felicia Gilcris -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 16 Play Video |
Taste & Smell Hank resists the urge to devour a slice of pizza so that he can walk you through the way we experience our major special senses. It all boils down to one thing: sensory cells translating chemical, electromagnetic, and mechanical stimuli into action potentials that our nervous system can make sense of. Today we're focusing on smell (olfaction) and taste (gustation), which are chemical senses that call on chemoreceptors. As usual, we'll begin with a quick look at how these things can go wrong. Table of Contents Anatomy and Physiology of Smell 2:26 The Olfactory Sensory Neurons 3:01 Receptors → Glomerulus → Mitral Cells → Brain 3:47 Taste Receptor Epithelial Cells 7:30 Receptors Trigger Action Potentials to Four Different Cranial Nerves 8:26 *** Crash Course is now on Patreon! You can support us directly (and have your contributions matched by Patreon through April 30th!) by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Simun Niclasen, Brad Wardell, Roger C. Rocha, Jan Schmid, Elliot Beter, Nevin Spoljaric, Sandra Aft, SR Foxley, Jessica Simmons, Stefan R. Finnerup, Jason A Saslow, Robert Kunz, Jessica Wode, Mike Drew, Steve Marshall, Anna-Ester Volozh, Christian Ludvigsen, Jeffrey Thompson, James Craver ***SUBBABLE MESSAGES*** TO: Rachel FROM: Alex I Love You! -- TO: Crash Course FROM: James Earle I loved Subbable. I'll see you on Patreon. ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Suzanne, Dustin & Owen Mets Amy Fuller Simon Francis Max Bild-Enkin Ines Krueger King of Conquerors Gareth Mok Chris Ronderos, Dallas, TX Gabriella Mayer jeicorsair Tokyo Coquette Boutique Konradical the nonradical -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 17 Play Video |
Hearing & Balance Crash Course A&P continues the journey through sensory systems with a look at how your sense of hearing works. We follow sounds as they work there way into the ear where they are registered and transformed into action potentials. This mechanism not only helps you hear but also helps maintain your equilibrium. Table of Contents Choclea, Basilar Membrane, and Hair Cells Register and Transduct Sound into Action Potentials The Vestibular Apparatus Responds to Specific Motions Keep Your Equilibrium 7:36 *** Crash Course is now on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Jan Schmid, Steve MarshallAnna-Ester Volozh, Sandra Aft, Brad Wardell, Christian Ludvigsen, Robert Kunz, Jason, A Saslow, Jacob Ash, Jeffrey Thompson, Jessica Simmons, James Craver, Simun Niclasen, SR Foxley, Roger C. Rocha, Nevin, Spoljaric, Eric Knight, Elliot Beter, Jessica Wode ***SUBBABLE MESSAGES*** TO: My Student FROM: Earle Check out www.youtube.com/amorsciendi for supplementary content. -- TO: Everyone FROM: Magnus Krokstad Keep dreaming! ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Belinda Pearson Caroline S. Ariela Karp and Gavi Lazan Elizabeth Gregory Amelia Gorlick Andrea Black Bill Wolf Patrick Audley Caitrin McCullough Brandi Gates -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 18 Play Video |
Vision Next stop in our tour of your sensory systems? VISION. With a little help from an optical illusion, we take a look inside your eyes to try to figure out how your sense of vision works -- and how it can be tricked. *** Table of Contents The Structure of the Eye 2:31 The Fibrous, Vascular, and Inner Layers 3:33.2 The Retina 4:56 Photoreceptors, Bipolar Cells, and Ganglion Neurons 5:09.2 Rods and Cones 6:07.5 *** Crash Course is now on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Jan Schmid, Steve Marshall, Anna-Ester Volozh, Sandra Aft, Brad Wardell, Christian Ludvigsen, Robert Kunz, Jason, A Saslow, Jacob Ash, Jeffrey Thompson, Jessica Simmons, James Craver, Simun Niclasen, SR Foxley, Roger C. Rocha, Nevin, Spoljaric, Eric Knight, Elliot Beter, Jessica Wode ***SUBBABLE MESSAGES*** TO: THE WORLD FROM: Future Is The Future Awesome gender neutral vintage clothing: http://futureisthefuture.com -- TO: Beth FROM: Joey I Love You Beth Ronie With All Of My Heart! ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Sofie Harning Sour Bags & Totes Don Phillips Christian Dodson Christian Dodson (once again) Christian Dodson (again) Christian Dodson (NO EDGE) Sour Bags & Totes tuseroni Amy Guerrero -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 19 Play Video |
The Skeletal System Today Hank explains the skeletal system and why astronauts Scott Kelly and Mikhail Kornienko are out in space studying it. He talks about the anatomy of the skeletal system, including the flat, short, and irregular bones, and their individual arrangements of compact and spongy bone. He'll also cover the microanatomy of bones, particularly the osteons and their inner lamella. And finally he will introduce the process of bone remodeling, which is carried out by crews of osteocytes, osteoblasts, and osteoclasts. Table of Contents Anatomy of the Skeletal System 2:33 Flat, Short, and Irregular Bones 3:11 Arrangements of Compact and Spongy Bone 4:22 Osteons and Their Inner Lamella 5:05 Bone Remodeling 7:28 Osteocytes, Osteoblasts, and Osteoclasts 6:03 *** Crash Course is now on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Jan Schmid, Steve Marshall, Anna-Ester Volozh, Sandra Aft, Brad Wardell, Christian Ludvigsen, Robert Kunz, Jason, A Saslow, Jacob Ash, Jeffrey Thompson, Jessica Simmons, James Craver, Simun Niclasen, SR Foxley, Roger C. Rocha, Nevin, Spoljaric, Eric Knight, Elliot Beter, Jessica Wode ***SUBBABLE MESSAGES*** TO: Hunter Boyajian FROM: Chase Boyajian In the darkest times, hope is something you give yourself. -- TO: The World FROM: Andrew Johnstone Lets all make a podcast ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Julie Kaminski, Steven Ness, Hannah!!!!!, Pamela Genise, Mark B. Williams, Becky Kaplan, William Edwards, Rebecca Carlson, Matthew Tryba, Eric Birchfield -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 20 Play Video |
Joints We continue our look at your bones and skeletal system, skipping over the silly kid's song in favor of a more detailed look at your your axial and appendicular skeleton. This episode also talks about the structural and functional classifications of your joints and the major types of body movement that they facilitate. Table of Contents Basic Structure of Your Skeletal System 1:50 Axial and the Appendicular Skeleton 2:02 Structural and Functional Classifications of Joints 3:41 Major Types of Body Movement 6:02 *** Crash Course is now on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Jan Schmid, Steve Marshall, Anna-Ester Volozh, Sandra Aft, Brad Wardell, Christian Ludvigsen, Robert Kunz, Jason, A Saslow, Jacob Ash, Jeffrey Thompson, Jessica Simmons, James Craver, Simun Niclasen, SR Foxley, Roger C. Rocha, Nevin, Spoljaric, Eric Knight, Elliot Beter, Jessica Wode ***SUBBABLE MESSAGES*** TO: Everyone FROM: Martin Owens To gild refined gold is just silly -- TO: Dana FROM: Cameron Still holding out! we're gonna make it through. ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Stephen DeCubellis, Vanessa Benavent, Rob Palmer, Dr. John D. Trombley, BouwsT, Robin Duckworth, Kyle "Defender of Awesome" Willis, Damian Shaw, Elisa DeCastro, Johnny Young!, -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 21 Play Video |
Muscles, Part 1 - Muscle Cells We're kicking off our exploration of muscles with a look at the complex and important relationship between actin and myosin. Your smooth, cardiac, and skeletal muscles create movement by contracting and releasing in a process called the sliding filament model. Your skeletal muscles are constructed like a rope made of bundles of protein fibers, and that the smallest strands are your actin and myosin myofilaments. Its their use of calcium and ATP that causes the binding and unbinding that makes sarcomeres contract and relax. Table of Contents Smooth, Cardiac, and Skeletal Muscles Create Movement 1:18 Sliding Filament Model 4:52 Skeletal Muscles Are Made of Bundles of Protein Fibers 2:40 Actin and Myosin Myofilaments 3:54 Calcium and ATP Cause the Binding and Unbinding 5:05 *** Crash Course is now on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Jan Schmid, Steve Marshall, Anna-Ester Volozh, Sandra Aft, Brad Wardell, Christian Ludvigsen, Robert Kunz, Jason, A Saslow, Jacob Ash, Jeffrey Thompson, Jessica Simmons, James Craver, Simun Niclasen, SR Foxley, Roger C. Rocha, Nevin, Spoljaric, Eric Knight, Elliot Beter, Jessica Wode ***SUBBABLE MESSAGES*** TO: SEM students FROM: Mrs. S You are confident and courageous! I believe in you! DFTBA! -- TO: Zachary FROM: She who gave you life! You, like the Mongols, will always be the exception. ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: David Rybka, Beth Larter, Damian Shaw, Randy Goldberg MD, Cynthia Krohn, Allison DeVoe, Brinae Lois Gaudet, Sara Bovi, Stephen DeCubellis, Travis Bell -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 22 Play Video |
Muscles, Part 2 - Organismal Level Hank calls in a friend to do his push ups for him today to explain how skeletal muscles work together to create and reverse movements. Hank and Claire also demonstrate the role size plays in motor units, the three phase cycle of muscle twitches, and how the strength and frequency of an impulse affects the strength and duration of a contraction. This episode also explains twitch summation, tetanus, and isotonic vs. isometric movements. Table of Contents Skeletal Muscles Work Together to Create and Reverse Movements 1:14 Motor Units 3:52 Three Phases of Muscle Twitches 4:41 Strength and Frequency of Impulses 5:29 Strength and Duration of a Contraction 5:29 Twitch Summation vs Tetanus 6:19 Isotonic vs Isometric Movements 8:50 *** Crash Course Psychology Poster: http://www.dftba.com/crashcourse *** Crash Course is now on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Jan Schmid, Steve Marshall, Anna-Ester Volozh, Sandra Aft, Brad Wardell, Christian Ludvigsen, Robert Kunz, Jason, A Saslow, Jacob Ash, Jeffrey Thompson, Jessica Simmons, James Craver, Simun Niclasen, SR Foxley, Roger C. Rocha, Nevin, Spoljaric, Eric Knight, Elliot Beter, Jessica Wode ***SUBBABLE MESSAGES*** TO: Ariela FROM: Gavi I love you so much, stay awesome as always! -- TO: Josiah P. FROM: Amy P. I love you! ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Vanessa Benavent, Les Brown, John Hadfield, Damian Shaw, Burt G. Clothier & Tad A. Saine, Ashley Williamson, Carrie Williamson, Melissa A, Lopin Forsythe, Trevor Sacks -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 23 Play Video |
Endocrine System, Part 1 - Glands & Hormones Hank begins teaching you about your endocrine system by explaining how it uses glands to produce hormones. These hormones are either amino-acid based and water soluble, or steroidal and lipid-soluble, and may target many types of cells or just turn on specific ones. He will also touch on hormone cascades, and how the HPA axis effects your stress response. Table of Contents Endocrine System 2:32 Glands Produce Hormones 2:58 Amino Acid Based and Water Soluble 4:18 Steroidal and Lipid Soluble 4:44 Hormone Cascades 6:15 HPA Axis Effects Your Stress Response 6:30 *** Crash Course Psychology Poster: http://www.dftba.com/crashcourse *** Crash Course is now on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Jan Schmid, Steve Marshall, Anna-Ester Volozh, Sandra Aft, Brad Wardell, Christian Ludvigsen, Robert Kunz, Jason, A Saslow, Jacob Ash, Jeffrey Thompson, Jessica Simmons, James Craver, Simun Niclasen, SR Foxley, Roger C. Rocha, Nevin, Spoljaric, Eric Knight, Elliot Beter, Jessica Wode ***SUBBABLE MESSAGES*** TO: Laura Hewett FROM: Amy Paez Greetings from the other side of the world! DFTBA -- TO: Wesley FROM: G Distance is created by the Desert Otherworld, therefore we shall not be destroyed. ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Mickey Maloney, Dan Smalley, Stephen DeCubellis, Vanessa Benavent, Andrew Galante, LankySam!, David Costello, Vanessa Benavent, Kenzo Yasuda, Tessa White -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 24 Play Video |
Endocrine System, Part 2 - Hormone Cascades In the second half of our look at the endocrine system, Hank discusses chemical homeostasis and hormone cascades. Specifically, he looks at the hypothalamus-pituitary-thyroid axis, or HPT axis, and all the ways your body can suffer when that system, or your hormones in general, get out of whack. Table of Contents Chemical Homeostasis 1:04 Hormone Cascades 2:37 HPT Axis 3:25 Crash Course Psychology posters available now at DFTBA.com! http://www.dftba.com/crashcourse *** Crash Course is now on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Jan Schmid, Steve Marshall, Anna-Ester Volozh, Sandra Aft, Brad Wardell, Christian Ludvigsen, Robert Kunz, Jason, A Saslow, Jacob Ash, Jeffrey Thompson, Jessica Simmons, James Craver, Simun Niclasen, SR Foxley, Roger C. Rocha, Nevin, Spoljaric, Eric Knight, Elliot Beter, Jessica Wode ***SUBBABLE MESSAGES*** TO: Rachel FROM: Alex I Love You! -- TO: Crash Course FROM: James Earle I loved Subbable. I'll see you on Patreon. ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Megan McChristy, Matthew Feickert, Tara D. Kane, Gage Ledbetter, Benjamin Perea, Chad Walter, Janel Christensen, Alura Embrey, Ken Johnson, Harland Wirth -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 25 Play Video |
The Heart, Part 1 - Under Pressure Your heart gets a lot of attention from poets, songwriters, and storytellers, but today Hank's gonna tell you how it really works. The heart’s ventricles, atria, and valves create a pump that maintains both high and low pressure to circulate blood from the heart to the body through your arteries, and bring it back to the heart through your veins. You'll also learn what your blood pressure measurements mean when we talk about systolic and diastolic blood pressure. Table of Contents Heart's Ventricles, Atria and Valves Create a Pump 3:25 Maintains Both High and Low Pressure 3:25 Blood Circulates From the Heart to the Body Through Your Arteries 4:47 Blood Circulates From the Body to the Heart Through Your Veins 4:49 Systolic and Diastolic Blood Pressure 7:58 Crash Course Psychology posters available now at DFTBA.com! http://www.dftba.com/crashcourse *** Crash Course is now on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Jan Schmid, Anna-Ester Volozh, Robert Kunz, Jason A Saslow, Christian Ludvigsen, Chris Peters, Brad Wardell, Beatrice Jin, Roger C. Rocha, Eric Knight, Jessica Simmons, Jeffrey Thompson, Elliot Beter, Today I Found Out, James Craver, Ian Dundore, Jessica Wode, SR Foxley, Sandra Aft, Jacob Ash, Steve Marshall ***SUBBABLE MESSAGES*** TO: My Student FROM: Earle Check out www.youtube.com/amorsciendi for supplementary content. -- TO: Everyone FROM: Magnus Krokstad Keep dreaming! ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Damian Shaw, Taylor Garget, Emily Barker, Librarifan, Damian Shaw, Courtney Spurgeon, juliagraph, Katherine Allen, Stephen DeCubellis, Vanessa Benavent -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 26 Play Video |
The Heart, Part 2 - Heart Throbs Today we're talking the heart and heart throbs -- both literal and those of the televised variety. Hank explains how your heart’s pacemaker cells use leaky membranes to generate their own action potentials, and how the resulting electricity travels through the cardiac conduction pathway from SA Node to Purkinje fibers, allowing your heart to contract. He's also going to make you better able to spot inaccuracies in medical dramas by explaining how defibrillators work to reset the rhythm of your heart. Table of Contents Pacemaker Cells Generate Their Own Action Potentials 2:47 The Cardiac Conduction Pathway 3:45 SA Node to Purkinje Fibers 4:48 How Defbrilators Work 6:46 *** Crash Course is now on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Jan Schmid, Anna-Ester Volozh, Robert Kunz, Jason A Saslow, Christian Ludvigsen, Chris Peters, Brad Wardell, Beatrice Jin, Roger C. Rocha, Eric Knight, Jessica Simmons, Jeffrey Thompson, Elliot Beter, Today I Found Out, James Craver, Ian Dundore, Jessica Wode, SR Foxley, Sandra Aft, Jacob Ash, Steve Marshall ***SUBBABLE MESSAGES*** TO: Beth FROM: Joey I Love You Beth Ronie With All Of My Heart! -- TO: The WORLD FROM: Future Is The Future Awesome gender neutral vintage clothing: http://futureisthefuture.com ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Matthew Feickert, Stephen DeCubellis, Ethi Raj, Paul Castillo, Katrina Castillo, @bdb_i_am, Laura South, Philip Oddie, Suné Horn, @joshlama -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 27 Play Video |
Blood Vessels, Part 1 - Form and Function Now that we've discussed blood, we're beginning our look at how it gets around your body. Today Hank explains your blood vessels and their basic three-layer structure of your blood vessels. We're also going over how those structures differ slightly in different types of vessels. We will also follow the flow of blood from your heart to capillaries in your right thumb, and all the way back to your heart again. Table of Contents The Basice Three-Layer Structure of Your Blood Vessels 2:17 Different Types of Vessels 3:36 The Flow of Blood From Your Heart to Capillaries 3:59 The Flow From Capillaries to the Heart 7:01 *** Crash Course is now on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Jan Schmid, Anna-Ester Volozh, Robert Kunz, Jason A Saslow, Christian Ludvigsen, Chris Peters, Brad Wardell, Beatrice Jin, Roger C. Rocha, Eric Knight, Jessica Simmons, Jeffrey Thompson, Elliot Beter, Today I Found Out, James Craver, Ian Dundore, Jessica Wode, SR Foxley, Sandra Aft, Jacob Ash, Steve Marshall ***SUBBABLE MESSAGES*** TO: Hunter Boyajian FROM: Chase Boyajian In the darkest times, hope is something you give yourself. -- TO: The World FROM: Andrew Johnstone Lets all make a podcast ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Luke Blackbourn, Tori McClanahan, Evan Gale, Damian Shaw, Sean Riley, Ólafur D. Skúlason, Ho Yin Michael Cheng, Philip Oddie, Silvan Fricker, Stephen DeCubellis -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 28 Play Video |
Blood Vessels, Part 2 And now we return to blood vessels. In this episode, we start discussing what blood pressure is, how it can become "high", and what that means for our health. One of the more interesting points is that your body has ways of dealing with high blood pressure, but they're not ways we want out bodies to operate on a full time basis. And why can't we butter our bacon? WHY!?!?! TABLE OF CONTENTS Don't Butter Your Bacon 01:36 Blood Flow and Resistance 01:54 Blood Pressure 02:42 Short Term Responses 04:11 Neural, Hormonal, and Kidney Response 04:33 How Chronic High Blood Pressure Can Kill 06:21 *** Crash Course is now on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Jan Schmid, Anna-Ester Volozh, Robert Kunz, Jason A Saslow, Christian Ludvigsen, Chris Peters, Brad Wardell, Beatrice Jin, Roger C. Rocha, Eric Knight, Jessica Simmons, Jeffrey Thompson, Elliot Beter, Today I Found Out, James Craver, Ian Dundore, Jessica Wode, SR Foxley, Sandra Aft, Jacob Ash, Steve Marshall ***SUBBABLE MESSAGES*** TO: Hunter Boyajian FROM: Chase Boyajian In the darkest times, hope is something you give yourself. -- TO: The World FROM: Andrew Johnstone Lets all make a podcast ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Luke Blackbourn, Tori McClanahan, Evan Gale, Damian Shaw, Sean Riley, Ólafur D. Skúlason, Ho Yin Michael Cheng, Philip Oddie, Silvan Fricker, Stephen DeCubellis -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 29 Play Video |
Blood, Part 1 - True Blood Now that we've talked about your blood vessels, we're going to zoom in a little closer and talk about your blood itself. We'll start by outlining the basic components of blood -- including erythrocytes, leukocytes, platelets, and plasma -- as well as the basic process of hemostasis that stops bleeding, and how antigens are responsible for the blood type that you have. By the end of this episode, you should be totally prepared for your next blood drive. Table of Contents The Basic Components of Blood 2:30 Erythrocytes, Leukocytes, Platelets, and Plasma 3:00 The Basic Process of Hemostasis 4:45 How Antigens Are Responsible For Your Blood Type 6:21 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark, Jan Schmid, Simun Niclasen, Robert Kunz, Daniel Baulig, Jason A Saslow, Eric Kitchen, Christian, Beatrice Jin, Anna-Ester Volozh, Eric Knight, Elliot Beter, Jeffrey Thompson, Ian Dundore, Stephen Lawless, Today I Found Out, James Craver, Jessica Wode, Sandra Aft, Jacob Ash, SR Foxley, Christy Huddleston, Steve Marshall, Chris Peters -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 30 Play Video |
Blood, Part 2 - There Will Be Blood It's time to start talking about some of the terrible things you can do to your own body, like blood doping. We'll start by explaining the structure and function of your erythrocytes, and of hemoglobin, which they use to carry oxygen. We'll follow the formation and life cycle of a red blood cell, including how their levels are regulated by EPO and their signalling molecules. We'll wrap up by looking at how blood doping works and how it is truly a recipe for disaster. Table of Contents Structure and Function of Your Erythrocyte 1:37 Hemoglobin Carries Oxygen 2:30 The Formation and Life Cycle of a Red Blood Cell 4:16 EPO and Signalling Molecules Regulate Blood Cells 5:42 Doping the Blood is a Recipe for Disaster 7:58 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark, Jan Schmid, Simun Niclasen, Robert Kunz, Daniel Baulig, Jason A Saslow, Eric Kitchen, Christian, Beatrice Jin, Anna-Ester Volozh, Eric Knight, Elliot Beter, Jeffrey Thompson, Ian Dundore, Stephen Lawless, Today I Found Out, James Craver, Jessica Wode, Sandra Aft, Jacob Ash, SR Foxley, Christy Huddleston, Steve Marshall, Chris Peters -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 31 Play Video |
Respiratory System, Part 1 So we all know that breathing is pretty important, right? Today we're going to talk about how it works, starting with the nameless evolutionary ancestor that we inherited this from, and continuing to the mechanics of both simple diffusion and bulk flow, as well as the physiology of breathing, and finishing with the anatomy of both the conducting zone and the respiratory zone of your respiratory system. Table of Contents The Mechanics of Both Simple Diffusion and Bulk Flow 2:44 The Physiology of Breathing 4:07 Anatomy of the Conducting Zone 5:47 Anatomy of Respiratory Zone 7:07 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark, Jan Schmid, Simun Niclasen, Robert Kunz, Daniel Baulig, Jason A Saslow, Eric Kitchen, Christian, Beatrice Jin, Anna-Ester Volozh, Eric Knight, Elliot Beter, Jeffrey Thompson, Ian Dundore, Stephen Lawless, Today I Found Out, James Craver, Jessica Wode, Sandra Aft, Jacob Ash, SR Foxley, Christy Huddleston, Steve Marshall, Chris Peters -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 32 Play Video |
Respiratory System, Part 2 Can a paper bag really help you when you are hyperventilating? It turns out that it can. In part 2 of our look at your respiratory system Hank explains how your blood cells exchange oxygen and CO2 to maintain homeostasis. We'll dive into partial pressure gradients, and how they, along with changes in blood temperature, acidity, and CO2 concentrations, change how hemoglobin binds to gases in your blood. (And yes, we'll explain the paper bag thing too!) Table of Contents How Blood Cells Exchange Oxygen and CO2 2:23 Partial Pressure Gradients 2:41 How Hemoglobin Binds to Gases in the Blood 4:40 The Thing With The Bag 9:04 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark, Jan Schmid, Simun Niclasen, Robert Kunz, Daniel Baulig, Jason A Saslow, Eric Kitchen, Christian, Beatrice Jin, Anna-Ester Volozh, Eric Knight, Elliot Beter, Jeffrey Thompson, Ian Dundore, Stephen Lawless, Today I Found Out, James Craver, Jessica Wode, Sandra Aft, Jacob Ash, SR Foxley, Christy Huddleston, Steve Marshall, Chris Peters -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 33 Play Video |
Digestive System, Part 1 Nachos are delicious. And versatile because today they're also going to help us learn a thing or two about your digestive system. Nachos can provide us with energy and raw materials, by first ingesting something nutritious, propelling it through the alimentary canal where it will be mechanically broken down, and chemically digested by enzymes until my cells can absorb their monomers and use them to make whatever they need. And eventually, there will be pooping. Table of Contents Ingestion 6:24 Propulsion 7:00 Mechanical Breakdown 7:38 Digestion 8:01 Absorption 8:30 Defecation 8:50 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark , Elliot Beter, Moritz Schmidt, Jeffrey Thompson, Ian Dundore, Jacob Ash, Jessica Wode, Today I Found Out, Christy Huddleston, James Craver, Chris Peters, SR Foxley, Steve Marshall, Simun Niclasen, Eric Kitchen, Robert Kunz, Avi Yashchin, Jason A Saslow, Jan Schmid, Daniel Baulig, Christian , Anna-Ester Volozh *** Episode co-sponsors: Bryan Drexler Peter Rapp, Lightbow - www.lightbow.net Sigmund Leirvåg Mikael Modin - http://www.msf.org/ Jeremy Bradley -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 34 Play Video |
Digestive System, Part 2 Nearly 200 years ago, Alexis St. Martin was shot in the stomach. He was saved by local army doctor William Beaumont, but had to live out his remaining years with a gaping hole in the stomach -- allowing Beaumont to learn a lot about how human digestion works. So today we're going to walk you through that process. We'll cover how mechanical and chemical digestion start in the mouth and continues in the stomach, where it’s pummeled by acids and enzymes and turned into chyme. We will also go over the stomach’s cephalic, gastric, and intestinal phases of digestive regulation. Table of Contents Mechanical and Chemical Digestion Starts in the Mouth 2:45 Continues in the Stomach 4:37 Food is Pummeled by Acids and Enzymes and Turned Into Chyme 5:31 Cephalic, Gastric and Intestinal Phases of Digestive Regulation 7:17 Crash Course Anatomy & Physiology Poster: http://store.dftba.com/products/crashcourse-anatomy-and-phys... *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark , Elliot Beter, Moritz Schmidt, Jeffrey Thompson, Ian Dundore, Jacob Ash, Jessica Wode, Today I Found Out, Christy Huddleston, James Craver, Chris Peters, SR Foxley, Steve Marshall, Simun Niclasen, Eric Kitchen, Robert Kunz, Avi Yashchin, Jason A Saslow, Jan Schmid, Daniel Baulig, Christian , Anna-Ester Volozh -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 35 Play Video |
Digestive System, Part 3 Nachos are great...if you are among the lucky ones whose body can digest them. When digestion goes according to plan, the small intestine performs most of your chemical digestion in the duodenum, while accessory organs including the liver, gallbladder, and pancreas contribute enzymes that all but finish the job. Then your large intestine, which is actually shorter than the small intestine, tries to extract the last bit of nutrition, including the occasional attempt to turn nachos into energy, which for most humans, ends in gassy failure. Table of Contents The Small Intestine Performs Most of Your Chemical Digestion in the Duodenum 1:54 The Liver, Gallbladder, and Pancreas Contribute Enzymes 4:26 The Large Intestine is Actually Shorter Than the Small Intestine 6:47 The Large Intestine Extracts the Last Bit of Nutrition 7:06 Crash Course A&P posters: http://store.dftba.com/products/crashcourse-anatomy-and-phys... *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark , Elliot Beter, Moritz Schmidt, Jeffrey Thompson, Ian Dundore, Jacob Ash, Jessica Wode, Today I Found Out, Christy Huddleston, James Craver, Chris Peters, SR Foxley, Steve Marshall, Simun Niclasen, Eric Kitchen, Robert Kunz, Avi Yashchin, Jason A Saslow, Jan Schmid, Daniel Baulig, Christian , Anna-Ester Volozh -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 36 Play Video |
Metabolism & Nutrition, Part 1 Metabolism is a complex process that has a lot more going on than personal trainers and commercials might have you believe. Today we are exploring some of its key parts, including vital nutrients -- such as water, vitamins, minerals, carbs, fats, and proteins -- as well as how anabolic reactions build structures and require energy, while catabolic reactions tear things apart and release energy. Anatomy of Hank Poster: http://store.dftba.com/products/crashcourse-anatomy-and-phys... -- Table of Contents Water, Vitamins, Minerals, Carbs, Fats and Proteins 3:47 Anabolic Reactions Build Structures and Require Energy 2:59 Catabolic Reactions Tear Things Apart and Release Energy 3:17 Metabolism 2:30 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark , Elliot Beter, Moritz Schmidt, Jeffrey Thompson, Ian Dundore, Jacob Ash, Jessica Wode, Today I Found Out, Christy Huddleston, James Craver, Chris Peters, SR Foxley, Steve Marshall, Simun Niclasen, Eric Kitchen, Robert Kunz, Avi Yashchin, Jason A Saslow, Jan Schmid, Daniel Baulig, Christian , Anna-Ester Volozh -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 37 Play Video |
Metabolism & Nutrition, Part 2 If you're like us, you love the sound of a brunch buffet. But not everything you eat at that glorious buffet is going to be turned into energy. Your body has to work with different forms of food in different ways. In this episode of Crash Course Anatomy & Physiology, Hank takes us through more about our metabolism including cellular respiration, atp, glycogenesis, and how insulin regulates our blood sugar levels. Anatomy of Hank Poster: http://store.dftba.com/products/crashcourse-anatomy-and-phys... -- Table of Contents Cellular Respiration converts glucose into ATP 2:03 Glycogenesis converts glucose to glycogen 3:26 Lipogenesis converts glucose into triglycerides 5:58 Insulin regulates blood sugar levels 5:22 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Fatima Iqbal, Penelope Flagg, Eugenia Karlson, Alex S, Jirat, Tim Curwick, Christy Huddleston, Eric Kitchen, Moritz Schmidt, Today I Found Out, Avi Yashchin, Chris Peters, Eric Knight, Jacob Ash, Simun Niclasen, Jan Schmid, Elliot Beter, Sandra Aft, SR Foxley, Ian Dundore, Daniel Baulig, Jason A Saslow, Robert Kunz, Jessica Wode, Steve Marshall, Anna-Ester Volozh, Christian, Caleb Weeks, Jeffrey Thompson, James Craver, and Markus Persson -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 38 Play Video |
Urinary System, Part 1 Even though you probably don't choose to spend a lot of time thinking about it, your pee is kind of a big deal. Today we're talking about the anatomy of your urinary system, and how your kidneys filter metabolic waste and balance salt and water concentrations in the blood. We'll cover how nephrons use glomerular filtration, tubular reabsorption, and tubular secretion to reabsorb water and nutrients back into the blood, and make urine with the leftovers. Anatomy of Hank poster: http://store.dftba.com/products/crashcourse-anatomy-and-phys... Table of Contents Kidneys Filter Metabolic Waste & Balance Salt & Water Concentrations in the Blood 1:25 Nephrons 4:13 Glomerular Filtration 4:37 Tublar Reabsorption 5:14 Tubular Secretion 8:17 Urine 8:40 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Fatima Iqbal, Penelope Flagg, Eugenia Karlson, Alex S, Jirat, Tim Curwick, Christy Huddleston, Eric Kitchen, Moritz Schmidt, Today I Found Out, Avi Yashchin, Chris Peters, Eric Knight, Jacob Ash, Simun Niclasen, Jan Schmid, Elliot Beter, Sandra Aft, SR Foxley, Ian Dundore, Daniel Baulig, Jason A Saslow, Robert Kunz, Jessica Wode, Steve Marshall, Anna-Ester Volozh, Christian, Caleb Weeks, Jeffrey Thompson, James Craver, and Markus Persson -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 39 Play Video |
Urinary System, Part 2 As we promised last week, we're not quite done talking about your pee yet. Today Hank explains how the urinary system regulates the production of urine, by maintaining a study glomerular flow rate. He'll also cover the anatomy of storing and excreting urine -- from the ureters to the urethra -- and the nervous system’s role in controlling the act of urination. Table of Contents Urinary System Regulates the Production of Urine 2:20 Mantains a Steady Glomerular Flow Rate 2:40 The Anatomy of Storing and Excreting Urine 5:02 Ureters to the Urethra 6:28 The Nervous System's Role in Controlling Urination 7:47 Anatomy & Physiology posters: http://store.dftba.com/products/crashcourse-anatomy-and-phys... *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Fatima Iqbal, Penelope Flagg, Eugenia Karlson, Alex S, Jirat, Tim Curwick, Christy Huddleston, Eric Kitchen, Moritz Schmidt, Today I Found Out, Avi Yashchin, Chris Peters, Eric Knight, Jacob Ash, Simun Niclasen, Jan Schmid, Elliot Beter, Sandra Aft, SR Foxley, Ian Dundore, Daniel Baulig, Jason A Saslow, Robert Kunz, Jessica Wode, Steve Marshall, Anna-Ester Volozh, Christian, Caleb Weeks, Jeffrey Thompson, James Craver, and Markus Persson -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 40 Play Video |
Reproductive System, Part 1: Female Reproductive System Human reproduction is complicated an important, and it's going to take a four part series for us to cover it. Today, we're kicking that off with the female reproductive system, starting with how sex hormones affect oogenesis and ovulation, continuing through how the ovarian and menstrual cycles mature and release oocytes, and create a comfy uterine environment for a fertilized egg. CC Anatomy & Physiology Poster http://store.dftba.com/products/crashcourse-anatomy-and-phys... Table of Contents Female Reproductive Anatomy 1:58 Sex Hormones Affect Oogenesis and Ovulation 3:15 Ovarian and Menstrual Cycles Mature and Release Oocytes 4:05 Uterine Environments and Fertilized Eggs 7:10 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Fatima Iqbal, Penelope Flagg, Eugenia Karlson, Alex S, Jirat, Tim Curwick, Christy Huddleston, Eric Kitchen, Moritz Schmidt, Today I Found Out, Avi Yashchin, Chris Peters, Eric Knight, Jacob Ash, Simun Niclasen, Jan Schmid, Elliot Beter, Sandra Aft, SR Foxley, Ian Dundore, Daniel Baulig, Jason A Saslow, Robert Kunz, Jessica Wode, Steve Marshall, Anna-Ester Volozh, Christian, Caleb Weeks, Jeffrey Thompson, James Craver, and Markus Persson -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 41 Play Video |
Reproductive System, Part 2: Male Reproductive System Our month-long exploration of human reproduction continues with a look at testicular anatomy, the steps of sperm production, and how it’s influenced by gonadotropin and testosterone. Hank also explains how sperm mature, and how they leave the body on a tide of glandular secretions during ejaculation. Anatomy & Physiology poster: http://store.dftba.com/products/crashcourse-anatomy-and-phys... Table of Contents Testicular Anatomy 1:53 Sperm Production 2:07 The Influence of Gonadotropin and Testosterone 3:24 How Sperm Mature and Leave the Body 5:35 Glandular Secretions During Ejaculation 6:45 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark, Eric Kitchen, Jessica Wode, Jeffrey Thompson, Steve Marshall, Moritz Schmidt, Robert Kunz, Tim Curwick, Jason A Saslow, SR Foxley, Elliot Beter, Jacob Ash, Christian, Jan Schmid, Jirat, Christy Huddleston, Daniel Baulig, Chris Peters, Anna-Ester Volozh, Ian Dundore, Caleb Weeks -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 42 Play Video |
Reproductive System, Part 3: Sex & Fertilization After weeks of discussion of human reproduction, today we arrive at the main event: THE SEX. Hank explains the four phases of the human sexual response, how a sperm finds and fertilizes an egg, creating a zygote, and how different types of contraception work to prevent that from happening. A&P poster: http://store.dftba.com/products/crashcourse-anatomy-and-phys... Table of Contents Four Phases of the Human Sexual Response 1:34 Fertilization 3:01 Creating a Zygote 3:21 Methods of Birth Control 7:15 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark, Eric Kitchen, Jessica Wode, Jeffrey Thompson, Steve Marshall, Moritz Schmidt, Robert Kunz, Tim Curwick, Jason A Saslow, SR Foxley, Elliot Beter, Jacob Ash, Christian, Jan Schmid, Jirat, Christy Huddleston, Daniel Baulig, Chris Peters, Anna-Ester Volozh, Ian Dundore, Caleb Weeks -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 43 Play Video |
Reproductive System, Part 4: Pregnancy & Development We've reached the grand finale of our four part series on human reproduction: BABIES! Today Hank walks you through the stages of pregnancy, beginning with how a zygote develops into blastomeres to a morula to a blastocyst and finally to an embryo and a fetus. He also explains some of the amazing anatomical changes that take place in the mother, and the hormonal sequence of events that lead to labor. A&P poster: http://store.dftba.com/products/crashcourse-anatomy-and-phys... Table of Contents Stages of Pregnancy 1:23 Zygote -- Blastomere 1:34 Morula -- Blastocyst 2:12 Embryo -- Fetus 5:07 Anatomical Changes 5:30 Hormonal Sequences Leading to Labor 7:12 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark, Eric Kitchen, Jessica Wode, Jeffrey Thompson, Steve Marshall, Moritz Schmidt, Robert Kunz, Tim Curwick, Jason A Saslow, SR Foxley, Elliot Beter, Jacob Ash, Christian, Jan Schmid, Jirat, Christy Huddleston, Daniel Baulig, Chris Peters, Anna-Ester Volozh, Ian Dundore, Caleb Weeks -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 44 Play Video |
Lymphatic System Today Hank explains your unsung lymphatic system and how it supports cardiovascular function by collecting, filtering, and returning interstitial fluid back into the bloodstream via a system of lymphatic vessels. He also explains the system’s major role in fighting off infection, and how lymph nodes, and other lymphoid organs, and MALT areas house antigen-attacking lymphocytes that provide crucial support to the immune system. Table of Contents The Lymphatic System Supports Cardiovascular Function 2:09 Collects, Filters, and Returns Interstitial Fluid Back to the Bloodstream 3:12 Lymphatic Vessels 4:22 Role In Fighting Off Infection 5:40 Lymph Nodes, Lymphoid Organs, and Malt Areas House Antigen-Attacking Lymphocytes 6:04 *** Crash Course A&P poster: http://store.dftba.com/products/crashcourse-anatomy-and-phys... *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark, Eric Kitchen, Jessica Wode, Jeffrey Thompson, Steve Marshall, Moritz Schmidt, Robert Kunz, Tim Curwick, Jason A Saslow, SR Foxley, Elliot Beter, Jacob Ash, Christian, Jan Schmid, Jirat, Christy Huddleston, Daniel Baulig, Chris Peters, Anna-Ester Volozh, Ian Dundore, Caleb Weeks -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 45 Play Video |
Immune System, Part 1 Our final episodes of Anatomy & Physiology explore the way your body keeps all that complex, intricate stuff alive and healthy -- your immune system. The immune system’s responses begin with physical barriers like skin and mucous membranes, and when they’re not enough, there are phagocytes -- the neutrophils and macrophages. It also features the awesomely named natural killer cells and the inflammatory response, and we'll explain how all of these elements work together to save the day if you happen to slip on a banana peel. Crash Course A&P poster: http://store.dftba.com/products/crashcourse-anatomy-and-phys... Table of Contents Physical Barriers Like Skin and Mucous Membranes 2:01 Phagocytes: Neutrophils and Macrophages 3:17 Natural Killer Cells 4:29 Inflammatory Response 5:29 *** "Reformat" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark, Eric Kitchen, Jessica Wode, Jeffrey Thompson, Steve Marshall, Moritz Schmidt, Robert Kunz, Tim Curwick, Jason A Saslow, SR Foxley, Elliot Beter, Jacob Ash, Christian, Jan Schmid, Jirat, Christy Huddleston, Daniel Baulig, Chris Peters, Anna-Ester Volozh, Ian Dundore, Caleb Weeks -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 46 Play Video |
Immune System, Part 2 In the penultimate episode of Crash Course Anatomy & Physiology, Hank explains your adaptive immune system. The adaptive immune system's humoral response guards extracellular terrain against pathogens. Hank also explains B cells, antibodies, and how vaccines work. Crash Course A&P Poster: http://store.dftba.com/products/crashcourse-anatomy-and-phys... Table of Contents Adaptive Immune System's Humoral Response 1:19 How B Cells Mature, Identify Antigens, and Make Antibodies 2:42 How Antibodies Warm Pathogens and Mark Them for Death 5:22 Active and Passive Humoral Immunity 6:03 How Vaccines Work 6:27 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark, Eric Kitchen, Jessica Wode, Jeffrey Thompson, Steve Marshall, Moritz Schmidt, Robert Kunz, Tim Curwick, Jason A Saslow, SR Foxley, Elliot Beter, Jacob Ash, Christian, Jan Schmid, Jirat, Christy Huddleston, Daniel Baulig, Chris Peters, Anna-Ester Volozh, Ian Dundore, Caleb Weeks -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
Lecture 47 Play Video |
Immune System, Part 3 THE FINAL SHOWDOWN! This is the last episode on the immune system and also the very last episode of Crash Course Anatomy & Physiology. In it, Hank explains how the cellular immune response uses helper, cytotoxic, and regulatory T cells to attack body cells compromised by pathogens. He also explores how cytokines activate B and T cells, and what happens if your immune system goes rogue and starts causing autoimmune trouble. *** Crash Course A&P Posters: http://store.dftba.com/products/crashcourse-anatomy-and-phys... *** Table of Contents Helper, Cytotoxic and Regulatory T Cells Attack Compromised Body Cells 4:08 Cytokines Activate B and T Cells 5:00 When Your Immune System Goes Rogue 6:15 Autoimmune Trouble 7:27 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark, Eric Kitchen, Jessica Wode, Jeffrey Thompson, Steve Marshall, Moritz Schmidt, Robert Kunz, Tim Curwick, Jason A Saslow, SR Foxley, Elliot Beter, Jacob Ash, Christian, Jan Schmid, Jirat, Christy Huddleston, Daniel Baulig, Chris Peters, Anna-Ester Volozh, Ian Dundore, Caleb Weeks -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids |
