The Thickest Layer of Tissue in the Heart Wall Is

Question

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

Accepted Answer

The myocardium is the thickest layer of tissue in the heart wall, consisting of specialized cardiac muscle fibers responsible for the pumping action of the heart. The epicardium is the outermost layer of the heart wall, while the pericardium is a protective sac that surrounds the heart. The endocardium is the innermost layer of the heart wall, lining the chambers and valves of the heart.