Which layer of the heart is referred to as the endocardium?

The endocardium is defined as the inner layer of the heart. This layer lines the heart's chambers and covers the heart valves, providing a smooth surface for blood to flow over and helping to minimize friction as the heart pumps. The endocardium is composed of endothelial cells, making it crucial for maintaining the health of the heart and the efficiency of blood circulation. Its role is vital as any damage or disease affecting the endocardium can lead to serious cardiovascular issues.

Understanding the specific layers of the heart helps in grasping how they function together to maintain proper circulation and overall heart health. The outer layer, which is known as the epicardium, provides protection, while the middle layer, the myocardium, is responsible for the heart’s contractile function. Each layer has distinct characteristics and roles, but the endocardium’s position as the inner layer is critical in ensuring that the heart operates smoothly.