Which of the following is correct about the loop of Henle?
Correct answer: D. Ascending limb is impermeable to water
- A. Descending limb is impermeable to water
- B. Ascending limb is permeable to water
- C. Descending limb is permeable to electrolytes
- D. Ascending limb is impermeable to water
Explanation
The ascending limb reabsorbs ions but not water, crucial for urine concentration.
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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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