Which factor would reduce net filtration pressure the most
A)vasodilation of the afferent arteriole
B)vasocontraction of the efferent arteriole
C)a low capsular hydrostatic pressure
D)a large increase in blood colloid osmotic pressure

Question

Quizplus · Accepted Answer

A large increase in blood colloid osmotic pressure (e.g. due to a high concentration of plasma proteins such as albumin) would reduce the net filtration pressure the most by opposing the outward force of hydrostatic pressure in the glomerulus. This is because the osmotic pressure gradient between the glomerular filtrate and the blood would increase, causing more water to be reabsorbed into the capillaries and less to be filtered into the Bowman's capsule. Vasodilation of the afferent arteriole would increase hydrostatic pressure and therefore increase net filtration pressure, while vasocontraction of the efferent arteriole would decrease hydrostatic pressure and increase net filtration pressure. A low capsular hydrostatic pressure would also increase net filtration pressure.

Which Factor Would Reduce Net Filtration Pressure the Most