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 portion of the nephron empties into the collecting duct?

Proximal convoluted tubule

Bowman's capsule

Distal convoluted tubule

Loop of Henle

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Verified step by step guidance

Step 1: Understand 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 major components of the nephron: Bowman's capsule, proximal convoluted tubule, loop of Henle, distal convoluted tubule, and collecting duct. Each has a specific role in filtration, reabsorption, and secretion.

Step 3: Recall that Bowman's capsule is the initial site of filtration, where blood plasma is filtered into the nephron. The proximal convoluted tubule follows, where most reabsorption of water, ions, and nutrients occurs.

Step 4: Understand that the loop of Henle is responsible for concentrating urine by reabsorbing water and salts. After this, the filtrate enters the distal convoluted tubule, which fine-tunes the reabsorption of ions and water based on the body's needs.

Step 5: Note that the distal convoluted tubule is the final portion of the nephron before the filtrate empties into the collecting duct, which collects urine from multiple nephrons and transports it to the renal pelvis.