The Chambers and Valves of the Heart are Lined by The

Question

The chambers and valves of the heart are lined by the
A) pericardium.
B) myocardium.
C) endocardium.
D) erythrocytes.
E) vena cava.

Accepted Answer

The endocardium lines the chambers and valves of the heart, providing a smooth surface for blood flow. The pericardium is the tough fibrous sac that surrounds the heart. The myocardium is the muscle tissue that forms the bulk of the heart wall. Erythrocytes are red blood cells and have no role in lining the heart. The vena cava is a large vein that carries deoxygenated blood into the heart, it also has no role in lining the heart.