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Biology Question on Human Excretory System

Which of the following best describes the sympathetic pathway's effect on the glomerulus in the kidney?

A

Sympathetic stimulation causes vasodilation of the afferent arteriole increasing glomerular filtration rate (GFR)

B

Sympathetic stimulation causes vasoconstriction of the afferent arteriole, decreasing glomerular filtration rate (GFR)

C

Sympathetic stimulation has no effect on the glomerulus

D

Sympathetic stimulation causes vasodilation of the efferent arteriole decreasing glomerular filtration rate (GFR)

Answer

Sympathetic stimulation causes vasoconstriction of the afferent arteriole, decreasing glomerular filtration rate (GFR)

Explanation

Solution

The correct option is (B):Sympathetic stimulation causes vasoconstriction of the afferent arteriole, decreasing glomerular filtration rate (GFR)