VASCULAR
CAPILLARIES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
High hydrostatic pressure at the arterial end
|
|
|
High hydrostatic pressure at the venous end
|
|
|
High water potential around the cells and low water potential in the capillary, leading to osmosis
|
|
|
Low water potential around the cells and high water potential in the capillary, leading to osmosis
|
Detailed explanation-1: -The hydrostatic pressure is lower (15 mm Hg) and the oncotic or colloidal osmotic pressure is much higher (25 mm Hg) near the venous end of capillaries. The fluid is reabsorbed into the capillaries together with waste products from the tissue fluid because of the pressure differential of 10 mm Hg.
Detailed explanation-2: -These forces are: Blood hydrostatic pressure: the pressure exerted by blood in the capillaries against the capillary wall. This pressure forces fluid out of the capillary.
Detailed explanation-3: -The water in the tissue fluid moves back into the capillary by osmosis due to a water potential gradient between the tissue fluid and the blood. Any remaining tissue fluid is called lymph which is drained into the lymphatic system and is eventually returned to the blood.