The primary force promoting fluid movement from the capillary to the interstitium is capillary oncotic pressure.

Question

Quizplus · Accepted Answer

The primary force promoting fluid movement from the capillary to the interstitium is capillary hydrostatic pressure, not oncotic pressure. Capillary oncotic pressure actually helps to prevent fluid from leaving the capillary by exerting a pulling force on water molecules, which balances out the pushing force of capillary hydrostatic pressure.

The Primary Force Promoting Fluid Movement from the Capillary to the Interstitium