Which of the following factors would decrease the GFR?
A)A fall in plasma protein concentration
B)An obstruction such as a kidney stone in the tubular system, which increases Bowman's capsule hydrostatic pressure
C)Vasodilation of the afferent arterioles
D)A fall in plasma protein concentration and vasodilation of the afferent arterioles
E)None of the above

Question

Quizplus · Accepted Answer

An obstruction in the tubular system such as a kidney stone would increase the hydrostatic pressure in Bowman's capsule, thereby decreasing the GFR. A fall in plasma protein concentration and vasodilation of the afferent arterioles would actually increase the GFR, so options A and D are incorrect. Option C, vasodilation of the afferent arterioles, would also increase the GFR, so it is not the correct choice. Therefore, B is the best choice as it directly affects the filtration process by increasing the pressure in the Bowman's capsule.

Which of the Following Factors Would Decrease the GFR