First slide

Regulation of Kidney Function

Question

Which of the following would help in prevention of diuresis?

Moderate

A

Reabsorption of ${Na}^{+}$ and water from renal tubules due to aldosterone.
B

Atrial natriuretic factor causes vasoconstriction.
C

Decrease in secretion of renin by JG cells.
D

More water reabsorption due to under secretion of ADH.

Solution

Diuresis is production of large amounts of dilute urine. Diuresis is prevented by decreasing the production of urine. This can be achieved by increasing sodium reabsorption and thereby water reabsorption with the help of aldosterone.
ANF is a vasodilator.
Renin helps in prevention of diuresis, so its production should be increased.
ADH secretion should be increased to prevent diuresis.

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