Epicardium
Epicardium
The Epicardium (pronounced: eh-pi-car-dee-um) is the outermost layer of the wall of the heart. It is also known as the visceral layer of the serous pericardium.
Etymology
The term "Epicardium" is derived from the Greek words "epi" meaning "upon" and "kardia" meaning "heart".
Anatomy
The Epicardium is one of the three layers that make up the heart wall. The other two layers are the myocardium and the endocardium. The Epicardium is a thin layer of serous membrane that helps to lubricate and protect the outside of the heart. Underneath the Epicardium is a layer of fat which varies in thickness in different people and provides additional protection to the heart.
Function
The main function of the Epicardium is to provide a protective layer for the heart, preventing friction between the moving heart and the surrounding organs. It also plays a role in the production of pericardial fluid which further reduces friction within the heart.
Related Terms
- Myocardium: The middle layer of the heart wall composed of heart muscle.
- Endocardium: The innermost layer of the heart wall.
- Pericardium: The double-walled sac that contains the heart and the roots of the great vessels.
- Serous pericardium: The thinner, more delicate membrane that forms the innermost layer of the pericardium.
External links
- Medical encyclopedia article on Epicardium
- Wikipedia's article - Epicardium
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