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

16. The Endocrine System

Introduction to the Endocrine System

Anatomy & Physiology

16. The Endocrine System

Introduction to the Endocrine System

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Multiple Choice

How does antidiuretic hormone (ADH) affect the permeability of the collecting ducts to water?

ADH has no effect on the permeability of the collecting ducts to water.

ADH increases the permeability of the collecting ducts to sodium, not water.

ADH decreases the permeability of the collecting ducts to water, reducing water reabsorption.

ADH increases the permeability of the collecting ducts to water, allowing more water to be reabsorbed.

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Verified step by step guidance

Understand the role of antidiuretic hormone (ADH) in the body. ADH is a hormone produced by the hypothalamus and stored in the posterior pituitary gland. It plays a crucial role in regulating water balance in the body.

Recognize the target site of ADH action. ADH primarily affects the kidneys, specifically the collecting ducts, which are part of the nephron responsible for the final concentration of urine.

Learn how ADH affects the collecting ducts. ADH increases the permeability of the collecting ducts to water by promoting the insertion of water channels called aquaporins into the cell membranes of the duct cells.

Understand the physiological effect of increased water permeability. When the collecting ducts become more permeable to water, more water is reabsorbed from the urine back into the bloodstream, concentrating the urine and reducing water loss.

Consider the implications of ADH action. By increasing water reabsorption, ADH helps maintain blood volume and pressure, and prevents dehydration, especially in conditions where water intake is limited.