kiranmayi
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In a tissue capillary, the interstitial hydrostatic pressure is 2 mm Hg, the capillary hydrostatic pressure is 25 mm Hg and the interstitial oncotic pressure is 7 mm Hg. If the net driving force across the capillary wall is 3 mm Hg favoring filtration, what is the capillary oncotic pressure?
A. 21 mm Hg
B. 23 mm Hg
C. 24 mm Hg
D. 25 mm Hg
E. 27 mm Hg
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| dxtxpx
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choice E
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| asmi
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E..
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| dxtxpx
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Net driving press= [(Pc - Pi) - (pc - pi)]
Where Pc= hydrostatic capillary pressure
Pi= hydrostatic interstitial pressure
pc=oncotic capillary pressure
pi=oncotic interstitial pressure
so putting the given values in:
Net driving pressure: 3 =[(25-2) - (pc - 7)]
3=[(23) - (pc-7)]
3=[(23) - (27-7)]
3=[(23) - (20)]
3=3
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| asmi
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what i calculated is..
net movt of fluid= net filration-net reabsorption
net filtration=Pc-Pi
net reabsorption= Oc-Oi
3=(25-2)-(Oc-7)
finally
Oc= 27
Pc= hydrostatic pressure inside capillary
Pi= '' outside capillary
Oc= oncotic pressure inside capillary
Oi= ''''' outside capillary
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