Question

Select the correct statement :

(1) Reduction in Glomerular Filtration Rate activates JG cells to release renin.

(2) Atrial Natriuretic Factor increases the blood pressure.

(3) Angiotensin II is a powerful vasodilator.

(4) Counter current pattern of blood flow is not observed in vasa recta.

Answer 1

Answer (1) Reduction in Glomerular Filtration Rate activates JG cells to release renin.

Sol. The correct answer is option (1) because a fall in GFR/blood flow can activate the JG cells to release renin.

Option (2) is incorrect statement as ANF causes vasodilation and thereby decrease the blood pressure.

Option (3) is incorrect statement as Angiotensin II, being a powerful vasoconstrictor, increases blood pressure.

Option (4) is incorrect statement as counter current pattern is observed between Henle's loop and vasa recta.