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Ch. 23 - The Digestive SystemWorksheetSee all chapters
All Chapters
Ch. 1 - Introduction to Physiology
Ch. 2 - Molecules and Molecular Interactions
Ch. 3 - Cells and Tissues
Ch. 4 - Cell Metabolism: Bioenergetics, Enzymes, and Respiration
Ch. 5 - Membrane Dynamics
Ch. 6 - Cell Communication
Ch. 7 - Integumentary System
Ch. 8 - Bone and Cartilage
Ch. 9 - Skeletal System
Ch. 10 - Joints
Ch. 11 - Muscles
Ch. 12 - The Nervous System I: Neurons and Neuronal Networks
Ch. 13 - The Nervous System II: The Central Nervous System
Ch. 14 - The Autonomic Nervous System
Ch. 15 - Sensory Physiology
Ch. 16 - The Endocrine System
Ch. 17 - Cardiovascular Physiology I: The Heart
Ch. 18 - Cardiovascular Physiology II: Blood, Blood Vessels, Circulation, and Exchange
Ch. 19 - The Urinary System
Ch. 20 - Respiratory Physiology
Ch. 21 - Acid-Base Balance-- Controlling Blood pH
Ch. 22 - Introduction to the Immune System
Ch. 23 The Lymphatic System
Ch. 23 - The Digestive System
Ch. 24 - Regulation of Metabolism and Energy Balance
Ch. 25 - Human Sexual Reproduction and Development

Concept #1: Mechanical and Chemical Digestion in the Mouth

Concept #2: The Swallowing Reflex

Practice: A 20-year-old college student eats a slice of pepperoni pizza. Which of the following parts of the pizza will be (very partially) digested in her mouth?

Practice: A 45-year-old woman presents to her gastroenterologist complaining of difficulty swallowing. She reports that she often feels like food gets “stuck” in her throat, causing pain. She sometimes coughs up undigested bits of food. The gastroenterologist passes a camera into the patient’s esophagus and finds lots of food trapped at the junction between the esophagus and the stomach. Which of the following structures is likely dysfunctional in this patient?