Epicardium
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Epicardium describes the outer layer of heart tissue (from Greek; epi- outer, cardium heart). When considered as a part of the pericardium, it is the inner layer, or visceral pericardium.
Its largest constituent is connective tissue and functions as a protective layer. The visceral pericardium apparently produces the pericardial fluid, which lubricates motion between the inner and outer layers of the pericardium.
| Cardiovascular system - Heart | Edit (http://en.wikipedia.org/w/wiki.phtml?title=MediaWiki:Heart&action=edit) |
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Pericardium - Epicardium - Myocardium - Endocardium - Cardiac pacemaker - Sinoatrial node - Atrioventricular node - Bundle of His - Purkinje fibers - Heart valves |