part_of part of part of surrounds surrounds contributes to morphology of Aves mouth oral opening lip http://upload.wikimedia.org/wikipedia/commons/9/90/Lips.JPG http://upload.wikimedia.org/wikipedia/commons/9/99/Mouth.jpg BTO:0001647 ZFA:0007006 VHOG:0000677 MESH:D008046 One of the two fleshy folds which surround the opening of the mouth. MA:0000343 uberon lips GAID:76 Surface structure that is one of the two fleshy folds surrounding the opening of the mouth.[TAO] UMLS:C0023759 NCIT:C12220 TAO:0007006 FMA:59816 OpenCyc:Mx4rvVi4U5wpEbGdrcN5Y29ycA CALOHA:TS-0558 SCTID:181221003 Wikipedia:Lip EMAPA:32839 labial UBERON:0001833 labia oris galen:Lip surface structure