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 of the following statements about the small intestine is true?

It is composed of the duodenum, jejunum, and ileum.

It produces bile for fat digestion.

It is shorter than the large intestine.

It is the primary site for nutrient absorption in the digestive system.

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Verified step by step guidance

Step 1: Begin by identifying the anatomical structure of the small intestine. The small intestine is divided into three main sections: the duodenum, jejunum, and ileum. These sections work together to perform digestion and absorption.

Step 2: Clarify the function of bile production. Bile is produced by the liver and stored in the gallbladder, not the small intestine. The small intestine uses bile to emulsify fats, but it does not produce bile itself.

Step 3: Compare the length of the small intestine to the large intestine. The small intestine is longer than the large intestine, typically measuring about 6 meters (20 feet) in length, while the large intestine is approximately 1.5 meters (5 feet).

Step 4: Highlight the primary function of the small intestine. The small intestine is the primary site for nutrient absorption in the digestive system. Its inner lining contains villi and microvilli, which increase the surface area for efficient absorption of nutrients into the bloodstream.

Step 5: Conclude by verifying the correct statement. Based on the anatomical and physiological functions of the small intestine, the correct answer is: 'It is the primary site for nutrient absorption in the digestive system.'