Question

question 24
which is the importance of the net filtration pressure?
it is important in reabsorbing fluid from the glomerular capillaries.
it is the force moving fluid across the capillary wall into the lumen of bowmans capsule.
it is important in calculating rpf.
it is necessary to calculate gfr.

Explanation:

Net filtration pressure (NFP) is the force that drives fluid across the capillary wall (of glomerular capillaries) into the lumen of Bowman’s capsule. It is calculated as the difference between the forces favoring filtration (glomerular hydrostatic pressure) and the forces opposing filtration (capsular hydrostatic pressure and blood colloid osmotic pressure). Reabsorption from glomerular capillaries is not its role. Renal plasma flow (RPF) calculation is different (involves PAH - para - aminohippuric acid clearance). While NFP is related to GFR (glomerular filtration rate) as GFR = Kf × NFP (where Kf is the filtration coefficient), the most direct importance described in the options is its role as the force moving fluid across the capillary wall into Bowman’s capsule lumen.

Answer:

It is the force moving fluid across the capillary wall into the lumen of Bowman’s capsule.