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 Heart2h 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

Small Intestine

Anatomy & Physiology

23. The Digestive System

Small Intestine

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Multiple Choice

The major site for nutrient absorption is the __________.

small intestine

mouth

large intestine

stomach

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Verified step by step guidance

Understand the function of each organ listed: The mouth is primarily for ingestion and the initial breakdown of food through chewing and saliva. The stomach is responsible for further breaking down food using acids and enzymes. The large intestine is mainly involved in water absorption and the formation of feces.

Recognize the role of the small intestine: The small intestine is the primary site for nutrient absorption. It has a large surface area due to villi and microvilli, which facilitate the absorption of nutrients into the bloodstream.

Consider the structure of the small intestine: It is divided into three parts - the duodenum, jejunum, and ileum. Each part plays a role in the digestion and absorption process, with the jejunum being particularly important for nutrient absorption.

Evaluate the options based on their primary functions: Compare the functions of the mouth, stomach, large intestine, and small intestine to determine which is most involved in nutrient absorption.

Conclude that the small intestine is the major site for nutrient absorption, as it is specifically adapted for this purpose with its extensive surface area and specialized structures.

3:44m

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Which of the following statements is true?

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Most digestion occurs in the small intestine.

Open Question

What are the three folds of the small intestine called? What is their purpose?

Activity

Alimentary canal and related accessory digestive organs

Multiple Choice

Both Paneth cells and Peyer’s patches are more numerous in the ileum than in the jejunum or the duodenum. Which statement below correctly describes why that may be?

Open Question

Which of the following is/are absorbed in the small intestine by the Na+/glucose cotransporter?

a. Glucose

b. Galactose

c. Fructose

d. Both a and b are correct.

e. All of the above are correct.

Multiple Choice

Digestion of carbohydrates and proteins by brush border enzymes occurs within the __________ of the small intestine.

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