The muscle layer of the heart is the
A) epicardium.
B) myocardium.
C) endocardium.
D) parietal pericardium.
E) mediastinum.

Name: The muscle layer of the heart is the A) epicardium. B) myocardium. C) endocardium. D) parietal pericardium. E) mediastinum.
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Question

Quizplus · Accepted Answer

The myocardium is the middle and thickest layer of the heart wall, composed of cardiac muscle tissue that contracts to pump blood through the circulatory system.

The Muscle Layer of the Heart Is the