How much blood does the average adult have?
An averagesized adult has a blood volume of about 5 quarts. Composition and Function of Blood I. Chapter Concepts A. Blood is composed of cells and a fluid containing many inorganic and organic molecules. B. Red blood cells are very abundant in blood and function to transport oxygen and assist in the transport of carbon dioxide. C. There are several types of white blood cells, and each type has a specific function in defending the body against disease. D. Plasma is over 90% water and contains a variety of proteins and other molecules. E. Platelets are fragments of larger cells that function in blood clotting. F. Capillary exchange: All exchange of materials between blood and tissue cells takes place across cardiovascular walls. Excess tissue fluid is absorbed by lymphatic capillaries and returned to cardiovascular veins. G. Blood is typed according to the antigens present on red blood cells. II. Overview (See Fig. 6.2) A. Functions of Blood 1. Transport of molecules such as nutrients,
