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Heart Wall: The Three Different Layers Of The Heart

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Heart Wall: The Three Different Layers Of The Heart
The heart wall is formed from 3 different layers: Epicardium, Myocardium and Endocardium. The epicardium is the most-outer layer that covers the heart wall. It is a smooth thin layer of serous mem-brane that protects the outside of the heart. Under the epicardium, a thicker layer of muscles is covering the heart, the myocardium. The myocardium is the middle layer of the heart wall that contains the cardi-ac muscle tissue. It represents the bulk of the thickness and mass of the heart wall and is the part of the heart responsible cardiac contraction. Below the myocardium is the thin endocardium layer which is simple endothelium layer that lines the inside of the heart. The endocardium is very smooth and is re-sponsible for keeping blood from
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