AskDefine | Define epicardium

Dictionary Definition

epicardium n : the innermost of the two layers of the pericardium [syn: visceral pericardium] [also: epicardia (pl)]

User Contributed Dictionary

English

Noun

  1. The layer of tissue between the pericardium and the heart.

Extensive Definition

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.
During ventricular contraction, the wave of depolarization moves from endocardial to epicardial surface.

External links

epicardium in German: Epikard
epicardium in Spanish: Epicardio
epicardium in French: Épicarde
epicardium in Italian: Epicardio
epicardium in Dutch: Epicard
epicardium in Polish: Nasierdzie
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