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 nutrients are primarily absorbed by capillaries in the small intestine?

Vitamins A and D

Amino acids and monosaccharides

Chylomicrons

Fatty acids and glycerol

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Verified step by step guidance

Step 1: Understand the structure of the small intestine and its role in nutrient absorption. The small intestine is divided into three sections: duodenum, jejunum, and ileum. It contains villi and microvilli that increase surface area for absorption.

Step 2: Identify the types of nutrients absorbed by capillaries in the villi. Capillaries are responsible for absorbing water-soluble nutrients, such as amino acids (from protein digestion) and monosaccharides (from carbohydrate digestion).

Step 3: Differentiate between water-soluble and fat-soluble nutrients. Fat-soluble nutrients, such as fatty acids, glycerol, and chylomicrons, are absorbed into lacteals (lymphatic vessels) rather than capillaries.

Step 4: Recognize that vitamins A and D are fat-soluble vitamins and are absorbed into lacteals, not capillaries. This helps eliminate incorrect options.

Step 5: Conclude that amino acids and monosaccharides are the correct answer because they are water-soluble and absorbed directly into the capillaries of the small intestine.