Which Layer Of The Heart Wall Is The Thickest. The wall of the heart is composed of three layers, the thin outer epicardium, the thick middle myocardium, and the very thin inner endocardium. Epicardium {this is the outer layer is also known as visceral pericardium and contains fat, which helps to cushion the heart} 2.
The human heart functions throughout a person's lifespan and is one of the most robust and hardest working muscle in the human body.
The heart sends deoxygenated blood to the lungs, where the blood loads up with oxygen and unloads carbon dioxide, a waste product of metabolism. The bottom tip of the heart, known as arteries face high levels of blood pressure as they carry blood being pushed from the heart under great force. The wall of the heart is made up of three layers: What are the main functions of the fibrous skeleton?