Assertion: endocardium's layer | /r/HasProperty | thick
Facets:
value: especially
type: DEGREE
value: in order to support a greater pumping force
type: PURPOSE
value: in the left ventricle
type: LOCATION
Source sentences:
text: The middle layer is composed of circular fiber bundles and is especially thick in the left ventricle, in order to support a greater pumping force.