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

Introduction to the Digestive System

Anatomy & Physiology

23. The Digestive System

Introduction to the Digestive System

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Multiple Choice

Which organ is a pouchlike muscular structure responsible for the majority of the digestion of food in the human body?

Small intestine

Pancreas

Stomach

Liver

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Verified step by step guidance

Step 1: Begin by identifying the organ responsible for the majority of digestion in the human body. Digestion involves breaking down food into smaller molecules that can be absorbed and used by the body.

Step 2: Understand the role of the stomach. The stomach is a pouchlike muscular organ located in the upper left quadrant of the abdomen. It plays a key role in mechanical digestion (churning food) and chemical digestion (secreting gastric juices containing hydrochloric acid and enzymes like pepsin).

Step 3: Compare the stomach's function to the other organs listed. The small intestine is primarily responsible for nutrient absorption, the pancreas produces digestive enzymes and hormones, and the liver processes nutrients and produces bile. None of these organs are primarily responsible for the majority of digestion like the stomach.

Step 4: Recognize the stomach's unique structure and function. Its muscular walls allow it to churn food, while its acidic environment helps break down proteins and kill pathogens. This makes it the primary organ for digestion.

Step 5: Conclude that the correct answer is the stomach, as it is the pouchlike muscular structure responsible for the majority of digestion in the human body.