
Lecture Description
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
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Course Index
- Introduction to Anatomy & Physiology
- Tissues, Part 1
- Tissues, Part 2 - Epithelial Tissue
- Tissues, Part 3 - Connective Tissues
- Tissues, Part 4 - Types of Connective Tissues
- The Integumentary System, Part 1: Skin Deep
- The Integumentary System, Part 2: Skin Deeper
- The Nervous System, Part 1
- The Nervous System, Part 2: Action! Potential!
- The Nervous System, Part 3: Synapses!
- Central Nervous System
- Peripheral Nervous System
- Autonomic Nervous System
- Sympathetic Nervous System
- Parasympathetic Nervous System
- Taste & Smell
- Hearing & Balance
- Vision
- The Skeletal System
- Joints
- Muscles, Part 1 - Muscle Cells
- Muscles, Part 2 - Organismal Level
- Endocrine System, Part 1 - Glands & Hormones
- Endocrine System, Part 2 - Hormone Cascades
- The Heart, Part 1 - Under Pressure
- The Heart, Part 2 - Heart Throbs
- Blood Vessels, Part 1 - Form and Function
- Blood Vessels, Part 2
- Blood, Part 1 - True Blood
- Blood, Part 2 - There Will Be Blood
- Respiratory System, Part 1
- Respiratory System, Part 2
- Digestive System, Part 1
- Digestive System, Part 2
- Digestive System, Part 3
- Metabolism & Nutrition, Part 1
- Metabolism & Nutrition, Part 2
- Urinary System, Part 1
- Urinary System, Part 2
- Reproductive System, Part 1: Female Reproductive System
- Reproductive System, Part 2: Male Reproductive System
- Reproductive System, Part 3: Sex & Fertilization
- Reproductive System, Part 4: Pregnancy & Development
- Lymphatic System
- Immune System, Part 1
- Immune System, Part 2
- Immune System, Part 3
Course Description
In this Crash Course series, Hank Green teaches most of what you should know about anatomy and physiology, perfect for a freshman-level biology course, or just your own curiosity about the human body.