Question

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).

Hint:

The sympathetic nervous system reduces GFR by causing vasoconstriction of the afferent arteriole, helping conserve water and maintain blood pressure.