part of attached to contributes to morphology of atrioventricular valve tricuspid valve leaflet heart layer chorda tendineae MESH:D002815 EMAPA:36322 chordae tendineae cordis GAID:564 SCTID:279330004 NCIT:C32307 The tendinous strands that connect the papillary muscles on the wall of the ventricles to the leaflets of the atrioventricular valves; the chordae tendineae serve to prevent the AV valves from prolapsing back into the atria. Wikipedia:Chordae_tendineae chordae tendinea FMA:12225