Layers of the heart wall

A block of the left ventricular wall from the fibrous pericardium to the endocardium: the serous pericardium and pericardial cavity, the epicardium and its fat with a coronary artery and cardiac vein, the myocardium in three fibre layers, the Purkinje fibres and the trabeculae carneae. The thin layers are drawn thicker than they are.