The most important force causing net water flow across capillary walls is ________.

Question

Quizplus · Accepted Answer

The hydrostatic pressure of capillary blood is the most important force causing net water flow across capillary walls. This pressure is created by the force of the heart pumping blood through the capillaries. Osmotic pressure of plasma proteins also plays a role in water movement, but it is not the most important force. Hydrostatic pressure of interstitial fluid and intracellular hydrostatic pressure do not play a significant role in water movement across capillary walls.

The Most Important Force Causing Net Water Flow Across Capillary