Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

23. The Digestive System

The Stomach

Anatomy & Physiology

23. The Digestive System

The Stomach

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Multiple Choice

What stimulates the secretion of hydrochloric acid (HCl) in the stomach?

Secretin

Insulin

Gastrin

Cholecystokinin

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Verified step by step guidance

Understand the role of hydrochloric acid (HCl) in the stomach: HCl is crucial for digestion as it helps break down food and provides an acidic environment for enzymes to function.

Identify the hormones listed: Secretin, Insulin, Gastrin, and Cholecystokinin. Each of these hormones has specific roles in the digestive system.

Learn about Gastrin: Gastrin is a hormone produced by G cells in the stomach lining. It plays a key role in stimulating the secretion of gastric acid (HCl) by the parietal cells in the stomach.

Explore the mechanism: Gastrin binds to receptors on parietal cells, triggering a cascade of events that lead to the secretion of HCl. This process is part of the body's response to food intake.

Differentiate the roles of other hormones: Secretin primarily stimulates the pancreas to release bicarbonate, Insulin regulates blood glucose levels, and Cholecystokinin stimulates the gallbladder to release bile. None of these directly stimulate HCl secretion.