Oxygen is essential to the survival of all body cells. The supply of oxygen to those cells is maintained via the circulatory system. The circulatory system is an integral part of the cardiovascular system which is maintained by the heart, blood vessels and blood. The three main subtypes of circulatory systems that occur in humans are the systemic circulation, pulmonary circulation and coronary circulation. All the three types of circulation are dependent on one another to maintain the supply of oxygen to and removal of carbon dioxide from the body tissues.
Pulmonary circulation serves as the link between the ...
