THORAX ABDOMEN AND PELVIS

MEDICAL

ARTERIES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What causes the filtration of plasma out of the capillaries into the tissues?
A
high pressure in venules
B
osmosis
C
diffusion
D
high pressure in aterioles
Explanation: 

Detailed explanation-1: -CHP is the force that drives fluid out of capillaries and into the tissues. As fluid exits a capillary and moves into tissues, the hydrostatic pressure in the interstitial fluid correspondingly rises.

Detailed explanation-2: -Net filtration occurs near the arterial end of the capillary since capillary hydrostatic pressure (CHP) is greater than blood colloidal osmotic pressure (BCOP). There is no net movement of fluid near the midpoint since CHP = BCOP. Net reabsorption occurs near the venous end since BCOP is greater than CHP.

Detailed explanation-3: -Glomerular blood hydrostatic pressure (GBHP) promotes filtration-it pushes water and solutes in blood plasma through the glomerular filter. GBHP is the blood pressure in glomerular capillaries, which is about 55mm Hg.

There is 1 question to complete.