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 lists the correct order of components of a nephron, starting from the site where filtration first occurs?

Bowman's capsule → proximal convoluted tubule → loop of Henle → distal convoluted tubule → collecting duct

Bowman's capsule → loop of Henle → proximal convoluted tubule → distal convoluted tubule → collecting duct

Proximal convoluted tubule → Bowman's capsule → loop of Henle → distal convoluted tubule → collecting duct

Bowman's capsule → distal convoluted tubule → loop of Henle → proximal convoluted tubule → collecting duct

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Verified step by step guidance

Step 1: Understand the nephron's structure and function. The nephron is the functional unit of the kidney responsible for filtration, reabsorption, and secretion. It consists of several components arranged in a specific order to process blood and form urine.

Step 2: Identify the site of filtration. Filtration occurs in the Bowman's capsule, which surrounds the glomerulus. This is the first step in the nephron's process.

Step 3: Trace the path of filtrate after Bowman's capsule. The filtrate moves into the proximal convoluted tubule, where reabsorption of water, ions, and nutrients occurs.

Step 4: Follow the filtrate through the loop of Henle. After the proximal convoluted tubule, the filtrate enters the loop of Henle, which has descending and ascending limbs that concentrate the urine by reabsorbing water and salts.

Step 5: Continue to the distal convoluted tubule and collecting duct. The filtrate then moves to the distal convoluted tubule for further reabsorption and secretion, and finally to the collecting duct, where urine is concentrated and transported to the renal pelvis.