Question

what is the effect of intense sympathetic stimulation on the gfr?
multiple choice
gfr increases
gfr decreases
gfr is not affected
gfr increases, then decreases

Explanation:

When there is intense sympathetic stimulation, it causes constriction of the afferent arterioles in the kidneys. This constriction reduces the blood flow into the glomerulus. Since the glomerular filtration rate (GFR) depends on an adequate blood flow to the glomerulus for filtration to occur, a reduction in blood flow (due to arteriole constriction) leads to a decrease in GFR.

Answer:

GFR decreases