19. Capillaries filter more than they reabsorb. What happens to the excess fluid in the tissues?
Added by Deborah E.
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Step 1: Recognize the physiological situation — because capillary hydrostatic pressure and oncotic forces (Starling forces) lead to net filtration overall, some plasma leaves the capillary bed and becomes interstitial fluid rather than being reabsorbed. Show more…
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In capillary beds of normal healthy individuals, almost all of the fluid from blood diffuses (filters) rapidly into surrounding tissues at the initial segment of the bed. But almost all of this fluid is reabsorbed back into the capillary before the blood exits the capillary bed. This is due to blood colloidal pressure and is created by large blood proteins and cells that cannot cross the capillary wall. Try and explain this phenomenon.
Sri K.
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What happens in capillaries?
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