The figure shows a section of a nephron labeled A to D. Identify the part where maximum water reabsorption occurs.
Correct answer: B. E - Proximal convoluted tubule
- A. A - Glomerulus
- B. E - Proximal convoluted tubule
- C. D - Loop of Henle
- D. F - Distal convoluted tubule
Explanation
The proximal convoluted tubule reabsorbs about 65-70% of water and sodium ions from the filtrate.
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About Homeostasis
Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
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