AP BIOLOGY

Detailed explanation-1: -If these problems occur, too much liquid can leave the capillaries and enter the spaces between cells. If the capillaries cannot reabsorb the fluid, it will stay in the tissues, causing swelling and water retention.

Detailed explanation-2: -Of the fluid that leaves the capillary, about 90 percent is returned. The 10 percent that does not return becomes part of the interstitial fluid that surrounds the tissue cells. Small protein molecules may “leak” through the capillary wall and increase the osmotic pressure of the interstitial fluid.

Detailed explanation-3: -Any fluid not reabsorbed into the capillaries is returned to the blood as lymph, via the lymphatic vessels.

Detailed explanation-4: -Edema occurs when an excessive volume of fluid accumulates in the tissues, either within cells (cellular edema) or within the collagen-mucopolysaccharide matrix distributed in the interstitial spaces (interstitial edema) [14, 42, 62, 64, 87, 88, 141, 215, 247, 279].

Detailed explanation-5: -Thus, it can be concluded that an increased blood-colloid osmotic pressure will increase fluid reabsorption by the capillaries.