The thickest layer of tissue in the heart wall is the:

Question

Quizplus · Accepted Answer

The thickest layer of tissue in the heart wall is the myocardium. The myocardium is the middle and thickest layer of the heart wall, composed primarily of cardiac muscle cells responsible for contracting the heart and pumping blood throughout the body. The epicardium is the outer layer of the heart wall, the pericardium is the outer membrane that surrounds and protects the heart, and the endocardium is the thin layer of tissue that lines the inner surfaces of the heart chambers and valves.

The Thickest Layer of Tissue in the Heart Wall Is