Biology, asked by arpitaturke499, 10 months ago

external structure of mammal heart

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Answered by Anonymous

1

The heart is composed of three layers: the epicardium, the myocardium, and the endocardium. The inner wall of the heart is lined by the endocardium. The myocardium consists of the heart muscle cells that make up the middle layer and the bulk of the heart wa,

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