Assertion: endocardium's layer | /r/CapableOf | serve dual purpose
Facets:
Source sentences:
text: Which layer of the heart or pericardium serves the dual purpose of lining the pericardium and forming the outermost wall of the heart
text: Which layer of the heart or pericardium serves the dual purpose of lining the pericardium and forming the outermost wall of the heart?