Select the correct statement

MCQ

✓
Reduction in Glomerular Filtration Rate activates $JG$ cells to release renin.
B
Atrial Natriuretic Factor increases the blood pressure.
C
Angiotensin $II$ is a powerful vasodilator.
D
Counter current pattern of blood flow is not observed in vasa recta.

✓

Answer

Correct option: A.

Reduction in Glomerular Filtration Rate activates $JG$ cells to release renin.

a
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.

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