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

25. The Urinary System

The Nephron

Anatomy & Physiology

25. The Urinary System

The Nephron

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Multiple Choice

Which of the following is the countercurrent multiplier in the kidney?

Distal convoluted tubule

Proximal convoluted tubule

Glomerulus

Loop of Henle

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Verified step by step guidance

Understand the concept of the countercurrent multiplier: It is a mechanism in the kidney that helps concentrate urine and maintain a gradient of solutes in the renal medulla.

Identify the structure responsible for the countercurrent multiplier: The Loop of Henle, which is part of the nephron in the kidney, plays a crucial role in this process.

Recognize the function of the Loop of Henle: It creates a concentration gradient in the medulla by reabsorbing water and salts, which is essential for the kidney's ability to concentrate urine.

Differentiate the Loop of Henle from other nephron structures: The distal convoluted tubule, proximal convoluted tubule, and glomerulus have different functions, such as filtration and reabsorption, but do not serve as the countercurrent multiplier.

Conclude that the Loop of Henle is the correct answer, as it is specifically designed to perform the countercurrent multiplication necessary for urine concentration.