The middle tissue layer of the heart is the:
A) epicardium.
B) endocardium.
C) myocardium.
D) pericardium.

Question

Quizplus · Accepted Answer

The myocardium is the middle tissue layer of the heart that contains cardiac muscle cells responsible for the contraction and relaxation of the heart. The epicardium is the outer layer of the heart, the endocardium is the inner lining of the heart chambers, and the pericardium is the sac surrounding the heart.

The Middle Tissue Layer of the Heart Is The