Assertion: aortic valve's cusp | /r/HasProperty | lunule
Facets:
Source sentences:
text: The free edge of each cusp (lunule) is thickened where it contacts the free edges of adjacent cusps and at the angulated apex of each free edge there is further nodular thickening, known as the nodule.
text: In some cases a valve may only have one cusp (unicuspid) or four cusps (quadricuspid), but this is less common.
text: The free edge of each cusp (the lunule) is thickened where it contacts the free edges of adjacent cusps and at the angulated apex of each free edge there is further nodular thickening, known as the nodule.
text: The extensive folding of the overlying endocardium also contributes to the hill-and-valley appearance of the cusps, also known as nodules and lunules.