Most of the human heart is composed of muscle called the
A)endocardium.
B)myocardium.
C)pericardium.
D)epicardium.
E)mesocardium.

Question

Quizplus · Accepted Answer

The myocardium is the middle layer of the heart wall and is made up of cardiac muscle cells responsible for contracting and pumping blood through the body. The endocardium is the inner lining of the heart, while the pericardium is the outer membrane that surrounds and protects the heart. The epicardium is the outermost layer of the heart wall. The mesocardium is not a part of the heart.

Most of the Human Heart Is Composed of Muscle Called