Question

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the heart wall consists of three distinctive layers: epicardium, myocardium and endocardium.

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Explanation:

The heart wall has three well - known layers. The epicardium is the outermost layer, the myocardium is the middle muscular layer responsible for the heart's contractions, and the endocardium is the innermost layer lining the heart chambers.

Answer:

The heart wall consists of three distinctive layers: epicardium, myocardium, and endocardium.