Question
Biology Question on excretory products and their elimination
What causes the liquid part of blood filter out form glomerulus into the renal tubule?
A
Diapedesis
B
Pelvis
C
Hydrostatic pressure
D
Dialysis
Answer
Hydrostatic pressure
Explanation
Solution
Ultra filtration takes place through basement membrane of glomerulus due to the glomeruler hydrostatic pressure (GHP) i.e., 70 mm Hg. Blood colloidal osmotic pressure (BCOP) i.e., 30 mm Hg. Capsular hydrostatic pressure (CHP) i.e., 20 mm Hg. Effective filtration pressure = GHP - (BCOP + CHP) EFP =70-30+20 EFP = 20