Contraction of mesangial cells results in a(n)______, which decreases glomerular filtration.
A) constriction of the afferent arterioles , which decreases glomerular filtration.
B) decrease in surface area of capillaries available for filtration
C) increase in surface area of capillaries available for filtration
D) dilation of the efferent arterioles
E) dilation of the afferent arterioles

Question

Quizplus · Accepted Answer

Mesangial cells, when they contract, lead to a decrease in the surface area of the glomerular capillaries available for filtration. This reduction in surface area directly decreases the glomerular filtration rate (GFR) by limiting the amount of plasma that can be filtered.

Contraction of Mesangial Cells Results in A(n)______, Which Decreases Glomerular