alleryRenin released by JG cells acts to
AInhibit aldosterone secretion in adrenal
BDecrease blood flow to glomerulus
CRestore the falling glomerular filtration
DPromote loss of sodium in urine
Answer & Solution
Correct answer: C. Restore the falling glomerular filtration
**Renin initiates the RAA cascade:** angiotensinogen
→ angiotensin I → angiotensin II
→ vasoconstriction + aldosterone release.
The net effect is raised systemic BP and glomerular perfusion, restoring GFR.
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