Measurements in a nephron reveal a glomerular hydraulic pressure of 69 mm Hg, and a fluid pressure in the Bowman's capsule of 15 mm Hg.Assuming that the plasma osmotic pressure is 30 mm Hg, and that essentially no plasma proteins are filtered by the glomerulus, what is the net glomerular filtration pressure in this case?
A) -6 mm Hg
B) 24 mm Hg
C) 54 mm Hg
D) 84 mm Hg
E) 114 mm Hg

Question

Quizplus · Accepted Answer

The net glomerular filtration pressure can be calculated as the difference between the glomerular hydraulic pressure and the sum of the fluid pressure in the Bowman's capsule and the plasma osmotic pressure.

Net filtration pressure = glomerular hydraulic pressure - (fluid pressure in Bowman's capsule + plasma osmotic pressure)

Net filtration pressure = 69 mm Hg - (15 mm Hg + 30 mm Hg) = 24 mm Hg

Therefore, the correct answer is B.

Measurements in a Nephron Reveal a Glomerular Hydraulic Pressure of 69