#cusp.flap__leaflet  a thin triangular flap of a heart valve
  supertype:  flap.animal_tissue  a movable piece of tissue partly connected to the body
  part of:  cardiac_valve__cardiacvalve__heart_valve  a valve to control one-way flow of blood
     part of:  heart.internal_organ__pump__ticker  the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions pump blood through the body; "he stood still, his heart thumping wildly"
        part of:  circulatory_system__circulatorysystem__cardiovascular_system  the organs and tissues involved in circulating blood and lymph through the body
           part of:  body__organic_structure__organicstructure__physical_structure  the entire physical structure of an organism (especially an animal or human being); "he felt as if his whole body were on fire"

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