AIPMT MAINS2012Zoology-Excretory Products and their Elimination
AIPMT MAINS 2012 Zoology Regulation of Kidney Function MCQ Question
Type: MCQ-conceptual-Medium-Class 11
A fall in glomerular filtration rate (GFR) activates:
A
juxta glomerular cells to release renin
B
adrenal cortex to release aldosterone
C
adrenal medulla to release adrenaline
D
posterior pituitary to release vasopressin
Correct Answer
Option A
Detailed Explanation
A fall in glomerular blood flow/glomerular blood pressure/GFR can activate the JG cells to release renin which converts Angiotensinogen in blood to Angiotensin I and further angiotensin II. Angiotensin II being powerful vasoconstrictor increases the Glomerular Blood pressure and thereby GFR.
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