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 part of the nephron extends down into the renal medulla?

Proximal convoluted tubule

Distal convoluted tubule

Bowman's capsule

Loop of Henle

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Verified step by step guidance

Step 1: Begin by understanding the structure and function of the nephron, which is the functional unit of the kidney responsible for filtering blood and forming urine.

Step 2: Review the anatomy of the nephron. It consists of several parts: Bowman's capsule, proximal convoluted tubule, loop of Henle, distal convoluted tubule, and collecting duct.

Step 3: Focus on the loop of Henle. This structure is unique because it extends deep into the renal medulla, unlike the proximal and distal convoluted tubules, which are located in the renal cortex.

Step 4: Understand the role of the loop of Henle. It is crucial for concentrating urine and maintaining the kidney's ability to regulate water and salt balance through countercurrent multiplication.

Step 5: Confirm that the other options (proximal convoluted tubule, distal convoluted tubule, and Bowman's capsule) are located in the renal cortex and do not extend into the renal medulla, making the loop of Henle the correct answer.