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 is a correct statement about fiber in the digestive system?

Fiber provides a significant source of energy for the body.

Fiber helps to regulate the body's use of sugars, helping to keep hunger and blood sugar in check.

Fiber is completely digested and absorbed in the small intestine.

Fiber is primarily broken down by stomach acids.

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Verified step by step guidance

Begin by understanding the role of fiber in the digestive system. Fiber is a type of carbohydrate that the body cannot digest. Unlike other carbohydrates, fiber passes through the digestive tract relatively intact.

Consider the statement that fiber provides a significant source of energy for the body. Since fiber is not digested and absorbed like other nutrients, it does not provide energy in the form of calories.

Evaluate the statement that fiber helps to regulate the body's use of sugars. Fiber can slow the absorption of sugar, helping to maintain stable blood sugar levels and reduce hunger, which is a correct function of fiber.

Analyze the statement that fiber is completely digested and absorbed in the small intestine. Fiber is not digested in the small intestine; instead, it moves into the large intestine where it can be partially fermented by gut bacteria.

Examine the statement that fiber is primarily broken down by stomach acids. Fiber is not broken down by stomach acids; it remains largely unchanged until it reaches the large intestine.