Increased sympathetic neuron activity will cause
A)vasoconstriction of afferent arterioles.
B)increased GFR.
C)increased urine production.
D)decreased blood volume.

Question

Quizplus · Accepted Answer

Increased sympathetic neuron activity leads to the release of norepinephrine, which causes vasoconstriction of the afferent arterioles in the kidney. This reduces blood flow to the glomeruli and therefore reduces the glomerular filtration rate (GFR), which in turn reduces urine production. The overall effect is decreased urine output and the preservation of blood volume.

Increased Sympathetic Neuron Activity Will Cause