Assertion: endocardium's layer | /r/CapableOf | form the wall of the heart
Facets:
Source sentences:
text: myocardium: The middle of the three layers forming the wall of the heart, containing cardiac muscle tissue.
text: Our exploration of more in-depth heart structures begins by examining the membrane that surrounds the heart, the prominent surface features of the heart, and the layers that form the wall of the heart.
text: Our exploration of more in-depth heart structures begins by examining the membrane that surrounds the heart, the prominent surface features of the heart, and the layers that form the wall of the heart.