Question
Biology Question on excretory products and their elimination
The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule is:
A
20 mm Hg
B
75 mm Hg
C
30 mm Hg
D
50 mm Hg
Answer
20 mm Hg
Explanation
Solution
The net pressure gradient that causes fluid to filter out of the glomeruli into the capsule in the renal corpuscle (part of the kidney) is typically around 20 mm Hg. This pressure gradient is a result of the difference between the blood pressure in the glomerular capillaries (higher pressure) and the opposing pressures created by the capsular hydrostatic pressure and the colloid osmotic pressure of plasma proteins.
So, the correct answer is (A): 20 mm Hg