- As previously noted, blood is 55% composed of plasma and 45% cells. Plasma is mainly composed of water and the water properties that makes it import is that it is a solvent and a fluid.
- The transportation of carbon dioxide is carried in the plasma dissolved in a form of hydrogen carbonate ions and some carbon dioxide directly.
- Digested food takes the form of soluble sugars and amino acids, which can be transported to the cells through the plasma.
- Waste molecules such as Urea involved in excretion, are also transported from the liver to the kidney dissolved in the plasma of blood.
- In communication terms, blood carries signals from the body through hormones such as ADH, Insulin and Glucagon.
- Another good property of water is that it is very good at carrying heat so becomes important in maintaining body temperature.
Thursday, 17 November 2011
2.58 Role of Plasma
Understand the role of plasma in the transport of carbon dioxide, digested food, urea, hormones and heat energy.