Assertion: epicardium | /r/HasProperty | serous membrane of the heart
Facets:
Source sentences:
text: The endocardium is the epithelial layer lining all the cavities of the heart, the myocardium is the thick muscular layer formed by cardiac muscles, and the epicardium is a serous membrane of the heart.
text: The epicardium is the serous membrane of the heart that protects it by reducing friction .
text: The epicardium is the serous membrane of the heart that protects it by reducing friction.