What three functions does the cardiovascular system perform?
The cardiovascular system ( which includes the heart, arteries, veins, capillaries, and blood ) serves several major functions that are necessary for life.
Major functions of the cardiovascular system are :
1) Transport of nutrients, oxygen, and hormones to cells through out the body and removal of metabolic wastes ( carbon dioxide and nitrogenous wastes ).
2) Protection of the body by white blood cells, antibodies and complement proteins that circulate in the blood and defend the body from blood loss after injuries.
3) Regulation of body temperature, fluid pH, and water content of cells.
The heart functions as the pump that moves blood through the body. The arterial circulation delivers blood from the heart to the body and the venous circulation carries it back to the heart. Capillaries are tiny blood vessels at the interface of the arterial and venous circulation where exchange of substances between the blood and body tissues occur.