Assertion: atrioventricular valve's cusp | /r/CapableOf | close hole
Facets:
value: tightly
type: MANNER
Source sentences:
text: To repair an aortic valve, surgeons may conduct several different types of repair, including separating valve flaps (cusps) that have fused, removing excess valve tissue so that the cusps can close tightly or patching holes in a valve.