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The only layer of the heart that actually contracts is the ________. epicardium endocardium pericardium myocardium
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The only layer of the heart that actually contracts is the ________. epicardium endocardium pericardium myocardium

User Basi
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Hello!

The myocardium is the muscular layer of the heart; it is comprised of contracting muscle fibers whose role is to allow the heart to contract.

Answer:
Myocardium
User KingofHeaven
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