Understanding The Cardiovascular System

    A doctor holding a stethoscope up to camera levelThe cardiovascular system consists of a network of organs, including the heart and kidneys, which are connected by a vast conglomeration of blood vessels, mainly arteries, veins, and capillaries, through which blood flows in a closed system which never connects to the outside unless it is by means of trauma (injury) or deliberate surgery.

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    The heart beats normally on a regular schedule, propelling the blood through the blood vessels to deliver oxygen and nutrients to all of the body’s tissues and organs and picking up wastes such as carbon dioxide which are produced by metabolism within the body. One of the organs that is serviced by the cardiovascular system is the heart itself.

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