Assertion: myocardium | /r/HasProperty | middle layer
Facets:
Source sentences:
text: The wall of the heart consists of three layers: the epicardium (external layer), the myocardium (middle layer) and the endocardium (inner layer).
text: myocardium: The middle of the three layers forming the wall of the heart, containing cardiac muscle tissue.
text: The heart is composed of three layers: the epicardium (outer layer) which prevents excess expansion or movement of the heart, the myocardium (middle layer) which initiates contractions driving the cardiac cycle, and the endocardium (inner layer) that lines the cavities and valves.
text: The myocardium is the middle layer and is the muscular substance of the heart.