The muscular middle layer of the heart wall responsible for contraction and pumping blood. Damage to the myocardium from a heart attack is called myocardial infarction. Heart failure results when the myocardium becomes too weak or stiff.
The muscular middle layer of the heart wall responsible for contraction and pumping blood. Damage to the myocardium from a heart attack is called myocardial infarction. Heart failure results when the myocardium becomes too weak or stiff.
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