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

Which of the following substances are secreted by the stomach?

Bile

Pepsinogen

Amylase

Insulin

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Verified step by step guidance

Identify the primary functions of the stomach in the digestive system, which include the secretion of gastric juices to aid in digestion.

Understand that the stomach secretes several substances, including hydrochloric acid (HCl), intrinsic factor, and digestive enzymes.

Recognize that pepsinogen is an inactive enzyme precursor secreted by the stomach's chief cells, which is converted into pepsin in the presence of stomach acid to help digest proteins.

Differentiate between substances secreted by the stomach and those secreted by other organs: bile is produced by the liver and stored in the gallbladder, amylase is primarily secreted by the salivary glands and pancreas, and insulin is secreted by the pancreas.

Conclude that among the options provided, pepsinogen is the substance secreted by the stomach, as it plays a crucial role in the digestion of proteins within the gastric environment.