Term: endocardium heart valve
Name: endocardium
Synonyms:
Definition: Layer that lines the lumen of the heart.
Ontology: Anatomy Ontology [ZFA:0001320]

Name: heart valve
Synonyms: heart valves
Definition: Multi-tissue structure composed of leaflets that separate parts of the heart, preventing blood backflow.
Ontology: Anatomy Ontology [ZFA:0005065]