What is the Structure of the Heart in Histological Terms?
The heart is composed of three main layers: the epicardium, myocardium, and endocardium. The epicardium is the outermost layer and contains connective tissue and fat. The myocardium, the thickest layer, is made up of cardiac muscle cells called cardiomyocytes. These cells are specialized for contraction and are interconnected by intercalated discs, which facilitate synchronized contractions. The endocardium is the innermost layer, lining the heart chambers and valves, and consists of endothelial cells and subendothelial connective tissue.
