Question

In kidneys the glomerular filtration rate (GFR) depends upon:
(A) The difference in hydrostatic and oncotic pressures between the glomerular capillaries and the lumen of the nephron.
(B) The nature of glomerular basement membrane.
(C) Total available filtration area.
(D) Relative concentration of ions.
Choose the correct answer from the options given below:

• A. (A), (B) and (C) only
• B. (A), (B) and (D) only
• C. (A), (B), (C) and (D) only
• D. (B), (C) and (D) only

Hint:

GFR = Filtration pressure + membrane properties + available filtration area.

Answer 1

The Correct Option is A

GFR is regulated by:
- Hydrostatic and oncotic pressures driving filtration.
- The structure and function of the glomerular basement membrane.
- Total filtration area available in the glomerulus.