Which of the following factors would cause fluid to be reabsorbed into the blood vessel at the venous end of the capillary?
A) High hydrostatic pressure of the blood
B) High colloid pressure of the plasma proteins
C) Hydrostatic pressure of the interstitial fluid
D) Both B and C

Question

Quizplus · Accepted Answer

At the arterial end of the capillary, blood has higher hydrostatic pressure than the interstitial fluid, which forces fluid out of the capillary. However, at the venous end, the hydrostatic pressure of the blood decreases, while the colloid pressure of plasma proteins and the hydrostatic pressure of the interstitial fluid remain relatively constant. As a result, the reabsorption of fluid into the blood vessel at the venous end is primarily driven by the higher colloid pressure of the plasma proteins and the hydrostatic pressure of the interstitial fluid, which push fluid back into the capillary. Therefore, both B (high colloid pressure of the plasma proteins) and C (hydrostatic pressure of the interstitial fluid) would cause fluid to be reabsorbed into the blood vessel at the venous end of the capillary.

Which of the Following Factors Would Cause Fluid to Be