A point on a systemic capillary was selected (in vivo) and the following pressur

Question

A point on a systemic capillary was selected (in vivo) and the following pressures were measured around that point. Calculate net filtration pressure (NFP) and select the best answer below. Interstitial fluid hydrostatic pressure = 1 mmHg Blood osmotic pressure = 25 mmHg Blood hydrostatic pressure = 17 mmHg Interstitial fluid osmotic pressure = 1mmHg

a. -8 which favors net absorption

b. -6 which favors net filtration

c. +6 which favors net filtration

d. +40 which favors net absorption

e. none of the above

Explanation / Answer

Net interstitial pressure=1-1=0

Net blood pressure=17-25=-8

Negative 8 oncotic pressure ,inward flow into the blood vessel and result in dehydration.

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