Cardiovascular system. Computer artwork of a naked man with a healthy cardiovascular system, of which the major components are the heart (in the chest cavity), the veins (blue) and the arteries (red). The cardiovascular, or circulatory, system, transports oxygen and nutrients to all cells and tissues in the body via the blood.
Cardiovascular System, Artwork. Photography. Encyclopædia Britannica Image Quest. Web. 17 Nov 2011.