PATHOLOGY

Detailed explanation-1: -The epicardium is the outermost layer of the heart. It is actually the visceral layer of the serous pericardium, which adheres to the myocardium of the heart. Histologically, it is made of mesothelial cells, the same as the parietal pericardium.

Detailed explanation-2: -The walls of the heart are composed of three layers: Epicardium-the outer layer. Myocardium-the middle, muscular layer. Endocardium-the inner layer.

Detailed explanation-3: -The epicardium is a layer of epithelial cells covering the surface of the heart.

Detailed explanation-4: -The epicardium constitutes the visceral pericardium, underlying fibro-elastic connective tissue, and adipose tissue. [2] Coronary arteries and veins, lymphatic vessels, and nerves run below the epicardium. The endocardium is composed of the endothelium and the subendothelial connective tissue layer.