AIPMT MAINS 2012 Zoology Regulation of Kidney Function MCQ Question
A fall in glomerular filtration rate (GFR) activates:
juxta glomerular cells to release renin
adrenal cortex to release aldosterone
adrenal medulla to release adrenaline
posterior pituitary to release vasopressin
Correct Answer
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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