Table of contents

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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

Introduction to the Digestive System

Anatomy & Physiology

23. The Digestive System

Introduction to the Digestive System

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Multiple Choice

Which of the following is not a function of gastric hydrochloric acid (HCl)?

Activating pepsinogen to pepsin

Emulsifying fats

Killing bacteria and pathogens

Providing an acidic environment for digestion

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Verified step by step guidance

Understand the role of gastric hydrochloric acid (HCl) in the stomach. HCl is a strong acid secreted by the parietal cells of the stomach lining.

Recognize that one of the primary functions of HCl is to activate pepsinogen into pepsin, an enzyme crucial for protein digestion.

Note that HCl also helps in killing bacteria and pathogens that enter the stomach, providing a defense mechanism against infections.

Acknowledge that HCl creates an acidic environment in the stomach, which is necessary for the optimal activity of digestive enzymes like pepsin.

Identify that emulsifying fats is not a function of HCl. Emulsification of fats is primarily the role of bile, which is produced by the liver and stored in the gallbladder.