What Are The Layers Of The Heart Wall. The wall of the heart is composed of three layers, the thin outer epicardium, the thick middle myocardium, and the very thin inner endocardium. In this article, we shall look at the anatomy and clinical relevance of these the innermost layer of the cardiac wall is known as the endocardium.
Differences in thickness of the heart chamber walls are due to variations in the amount of myocardium present, which reflects the amount of force each chamber is.
Cardiac, smooth, and cardiac muscle cells are located in the walls of the heart, appear striated, and are under involuntary control. These fiber bundles, consisting of the atrioventricular bundle and purkinje fibers, carry electrical impulses down the center of the heart. As she grew up, my wife had always felt a bit numb to emotions. Thoracic wall female breast mediastinum esophagus lungs heart diaphragm.