Which is the Layer That Lines the Internal Surface of the Heart

Question

Which is the layer that lines the internal surface of the heart wall?
A) parietal layer of the epicardium
B) endocardium
C) myocardium
D) fibrous pericardium
E) visceral layer of the epicardium

Accepted Answer

The endocardium is the layer that lines the internal surface of the heart wall. It is composed of a layer of endothelial cells and provides a smooth surface for blood to flow through the heart.