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Which of the following would help in prevention of diuresis?

1. Reabsorption of Na+ and water from renal tubules due to aldosterone
2. Atrial natriuretic factor causes vasoconstriction
3. Decrease in secretion of renin by JG cells
4. More water reabsorption due to undersecretion of ADH

Correct answer: Reabsorption of Na+ and water from renal tubules due to aldosterone

Solution

Aldosterone increases sodium reabsorption in the renal tubules, and water follows osmotically, so urine output falls. That helps prevent diuresis by conserving body fluid.

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