In the diagram showing the urinary system of human, label 'A' represents the adrenal cortex.It secretes a hormone that:
Correct answer: B. Increases Na⁺ reabsorption and K⁺ secretion
- A. Increases K⁺ reabsorption
- B. Increases Na⁺ reabsorption and K⁺ secretion
- C. Promotes water loss
- D. Inhibits renin release
Explanation
Aldosterone from adrenal cortex enhances Na⁺ reabsorption and K⁺ secretion in distal tubules.
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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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