What is one of the main functions of plasma proteins?

One of the main functions of plasma proteins is to maintain osmotic pressure in the blood. Plasma proteins, such as albumin, play a crucial role in regulating the movement of water between the blood and other tissues. They help to keep the fluids within the blood vessels, preventing excess fluid from leaking into the surrounding tissues. This is essential for maintaining blood volume and pressure, which in turn supports proper circulation and nutrient delivery throughout the body. The osmotic pressure generated by plasma proteins ensures that the balance of fluids is maintained, contributing to overall homeostasis.