What Is The Function Of Plasma In Blood?
Plasma refers to the liquid part of blood and makes up 55 percent of blood volume. Along with carrying the blood components (red and white blood cells and platelets), it has a number of functions necessary for the body to operate properly.CompositionWater makes up 90 percent of plasma. Other components of plasma include proteins, salts, glucose (blood sugar) and dissolved gases.Water ReservoirIn addition to molecule transport, plasma also acts as a water reservoir. When tissues need water, they extract it from plasma. Conversely, when tissues have excess water, they release it to the plasma.Clotting Factors and AntibodiesAmong the proteins transported by plasma are clotting factors and antibodies. Clotting factors control bleeding during injury, while antibodies defend against viruses, bacteria and cancer cells.Oxygen and Carbon Dioxide ExchangeInhaled oxygen diffuses from the lungs into the plasma, where it dissolves and is carried throughout the body. Carbon dioxide, a waste byproduc
