Fluid is filtered due to the hydrostatic pressure from the heart, but fluid is reabsorbed due to the pressure from proteins in the plasma.
The expression hydrostatic pressure makes reference to the pressure exerted by a fluid, in this case, the blood in the bloodstream.
Fluid is filtered from blood as it enters a capillary due to the hydrostatic pressure from the heart.
However, during this process fluid is reabsorbed as the blood exits a capillary due to the pressure from proteins in the plasma.
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