head bone facial bone UBERON:0003462 facial bone viscerocranium bone uberon test whether 'facial bone' is an exact synonym EMAPA:19019 facial skeleton bone EMAPA:35924 bone of facial skeleton UMLS:C0015455 MA:0003159 A bone that is part of a facial skeleton [Automatically generated definition]. MA:0001482 bone of viscerocranium NCIT:C63706 neural crest-derived structure