Assertion: valve's cusp | /r/CapableOf | serve as coaptive surfaces of the valve
Facets:
Source sentences:
text: Like the aortic valve, the pulmonic valve is formed by 3 cusps, each with a fibrous node at the midpoint of the free edges (similar to the nodes of Aranti in the aortic valve) as well as lunulae, which are the thin, crescent-shaped portions of the cusps that serve as the coaptive surfaces of the valve.