Q.

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

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a

It increases blood pressure

b

It decreases the glomerular filtration rate

c

It causes dilation of the afferent arteriole

d

It decreases blood pressure 

answer is D.

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Detailed 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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