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

Blood Supply of the Kidneys

Anatomy & Physiology

25. The Urinary System

Blood Supply of the Kidneys

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Multiple Choice

Blood is supplied to a nephron by its __________.

collecting duct

renal vein

efferent arteriole

afferent arteriole

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Verified step by step guidance

Step 1: Understand the anatomy of the nephron, which is the functional unit of the kidney responsible for filtering blood and forming urine. Blood supply to the nephron is crucial for its function.

Step 2: Learn the sequence of blood flow in the kidney. Blood enters the kidney through the renal artery, which branches into smaller arteries and eventually into afferent arterioles that supply individual nephrons.

Step 3: Recognize the role of the afferent arteriole. It carries blood into the glomerulus, a network of capillaries within the nephron where filtration occurs.

Step 4: Differentiate between the afferent and efferent arterioles. The afferent arteriole brings blood into the glomerulus, while the efferent arteriole carries filtered blood away from the glomerulus.

Step 5: Eliminate incorrect options. The collecting duct is part of the nephron but does not supply blood. The renal vein carries blood away from the kidney, and the efferent arteriole carries blood away from the glomerulus, not to it. Therefore, the correct answer is the afferent arteriole.