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Explain The Three Major Components Of The Cardiovascular System

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Explain The Three Major Components Of The Cardiovascular System
The three major components of the cardiovascular system are the heart, blood vessels and the blood. The main function of the cardiovascular system is to maintain blood flow to all parts of the body, in order for it to survive. The heart is a hollow muscular organ that lies left of the middle of the chest, and is about the size of a fist. The heart wall is made up of three layers; the Pericardium, Myocardium and Endocardium. The pericardium is a fibrous covering wrapping around the whole heart. The pericardium holds the heart in place by anchoring it to the diaphragm and sternum, but still allowing some movement as the heart beats. The myocardium is the thick, middle layer of the heart and is composed of cardiac muscle. The endocardium is the
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