Table of contents

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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

25. The Urinary System

Renal Physiology: Overview

Anatomy & Physiology

25. The Urinary System

Renal Physiology: Overview

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Multiple Choice

How does antidiuretic hormone (ADH) decrease the loss of water through the kidneys?

By promoting the excretion of sodium ions

By increasing the secretion of aldosterone

By decreasing the glomerular filtration rate

By increasing the permeability of the collecting ducts to water

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Verified step by step guidance

Understand the role of antidiuretic hormone (ADH) in the body. ADH is a hormone that helps regulate water balance by controlling the amount of water reabsorbed by the kidneys.

Recognize that ADH primarily acts on the collecting ducts of the kidneys. These ducts are responsible for the final concentration of urine before it is excreted.

Learn that ADH increases the permeability of the collecting ducts to water. This means that more water can be reabsorbed from the urine back into the bloodstream, reducing water loss.

Note that ADH achieves this by stimulating the insertion of water channels, known as aquaporins, into the walls of the collecting ducts. These channels facilitate the movement of water molecules.

Understand that by increasing water reabsorption, ADH effectively decreases the volume of urine produced, thereby conserving water in the body and maintaining hydration.