Assertion: heart valve | /r/HasAspect | leaflet
Facets:
Source sentences:
text: Every heart valve, except the mitral valve (which has two flaps), has three flaps, or leaflets.
text: As you can see, most heart valves have three leaflets, while the mitral valve only has two leaflets.
text: The heart valve that the Tria is intended to replace has three flaps, or leaflets, connected by flexible tissue.