Cardio - case study 14 Flashcards
1
Q
How does occlusion of a renal artery lead to an increase in plasma renin activity?
A
the narrowing causes a decrease in renal perfusion pressure, which stimulates renin secretion from the kidney’s juxtaglomerular cells to increase arterial pressure in compensation
2
Q
The secretion of renin leads to the activation of
A
angiotensin I - which activates angiotensin II, which causes vasoconstriction (TPR increase) and the release of aldosterone (blood vol increase)
3
Q
Why was renin secretion decreased in the other kidney?
A
the right kidney sensed increased arterial pressure and responded by decreasing its renin secretion (acted independently of left kidney’s occlusion)
