The hormone regulates the transfer of sodium from the nephron to the blood.
Correct answer: C. Aldosterone
- A. Parathormone
- B. Anti-diuretic hormone (ADH)
- C. Aldosterone
- D. Vasopressin
Explanation
Aldosterone is the correct answer because it is a hormone produced by the adrenal cortex that regulates sodium and potassium levels by promoting sodium reabsorption and potassium excretion in the kidneys. This process is essential for maintaining blood pressure and fluid balance. The other options are incorrect because they do not directly influence sodium transfer from the nephron to the blood. Parathormone is involved in calcium regulation, and both anti-diuretic hormone (ADH) and vasopressin are primarily concerned with water reabsorption rather than sodium balance.
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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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