Excretory Products And Their Elimination Ques 16
16. Which of the following would help in prevention of diuresis?
[2020]
(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 undersecretion of ADH
Show Answer
Answer : a
Hints & Solutions
(a) Adrenal cortex secretesmineralocorticoids like aldosterone which increase the reabsorption of $Na^{+}$and water from renal tubule that prevent diuresis. Diuresis is a condition in which the kidneys filter too much bodily fluid. Atrial natriuretic factor (ANF) is a 28 amino acid polypeptide hormone secreted mainly by the heart atria in response to atrial stretch. ANF acts on the kidney to increase sodium excretion and GFR, to antagonize renal vasoconstriction, and to inhibit renin secretion.
BETA
