💀anatomy and physiology i review

Interstitial fluid colloidal osmotic pressure (IFCOP)

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Interstitial fluid colloidal osmotic pressure (IFCOP) is the pulling force exerted by proteins in the interstitial fluid, which attracts water from the blood plasma through capillary walls. This pressure helps to maintain the balance of fluid between blood vessels and body tissues during capillary exchange.