The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule is

Question

The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule is (A) 30 mm Hg (B) 75 mm Hg (C) 10 mm Hg (D) 50 mm Hg

Tardigrade Admin · Accepted Answer

(i) Glomerular capillary pressure (60 mm Hg) favours filteration.
(ii) The colloidal osmotic pressure (due to plasma proteins, particularly albumin) acts against filtration. Its value is

s im 32 mm H g .

(iii) The filtrate pressure due to the glomerular filtrate filled in the Bowman’s capsule also acts against filtration. Its value is

s im 18 mm H g .

Net filtration pressure

= 60 - (32 + 18) mm H g

= 10 mm o f H g

Q. The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule is

30 mm Hg

75 mm Hg

10 mm Hg

50 mm Hg