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A fall in glomerular filtration rate (GFR) activates
Option: 1
juxtaglomerular cells to release renin
Option: 2
adrenal cortex to release aldosterone
Option: 3
adrenal medulla to release adrenaline
Option: 4
posterior pituitary to release vasopressin.
Answers (1)
As we have learnt,
Functions of JGA -
The JGA plays a complex regulatory role. 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 to angiotensin II. Angiotensin II, being a powerful vasoconstrictor, increases the glomerular blood pressure and thereby GFR.
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