A fall in glomerular filtration rate (GFR) activates
A
Juxtaglomerular cells to release renin
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B
Adrenal cortex to release aldosterone
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C
Adrenal medulla to release adrenaline
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D
Posterior pituitary to release vasopressin
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Solution
The correct option is A Juxtaglomerular cells to release renin A fall in GFR can stimulate the JG cells to release renin which can stimulate the glomerular blood flow and thereby the GFR comes back to normal.