First slide

Regulation of Kidney Function

Question

What is the main function of the renin-angiotensin-aldosterone mechanism?

Moderate

A

It decreases the glomerular filtration rate
B

It decreases blood pressure
C

It causes dilation of the afferent arteriole
D

It increases blood pressure

Solution

The renin-angiotensin-aldosterone system (RAAS) is responsible for regulating the body's blood pressure. Angiotensin II is a powerful vasoconstrictor. It increases the glomerular blood pressure and thereby GFR.

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