Endocardium

The endocardium is the innermost layer of tissue that lines the chambers of the heart. Its cells are embryologically and biologically similar to the endothelial cells that line blood vessels. The endocardium also provides protection to the valves and heart chambers.[1]

Endocardium
Interior of right side of heart
Details
Identifiers
LatinEndocardium
MeSHD004699
TA98A12.1.05.001
TA23962
FMA7280
Anatomical terminology
Illustration depicting the layers of the heart wall including the innermost endocardium

The endocardium underlies the much more voluminous myocardium, the muscular tissue responsible for the contraction of the heart. The outer layer of the heart is termed epicardium and the heart is surrounded by a small amount of fluid enclosed by a fibrous sac called the pericardium.[2]

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