part of part of innervates innervates branching part of branching part of maxillary nerve nasal vestibule nerve lower eyelid upper lip gingiva of upper jaw nerve of head region infra-orbital nerve UBERON:0018408 FMA:52978 A branch of the maxillary nerve that enters the infraorbital canal and innervates the lower eyelid, upper lip, the nasal vestibule, the upper incisors, canines, premolars, upper gums, lower eyelid and conjunctiva, and part of the nose. Wikipedia:Infraorbital_nerve infraorbital nerve SCTID:280360008 infraorbital portion infra-orbital nerve lower eyelid nerve