part of part of innervates innervates branching part of branching part of nerve lateral pterygoid muscle nerve of head region buccal nerve lateral pterygoid nerve branch of buccal nerve to lateral pterygoid nervus pterygoideus lateralis nerve to lateral pterygoid Wikipedia:Lateral_pterygoid_nerve FMA:53107 A nerve that innervates the lateral pterygoid muscle. external pterygoid nerve SCTID:48852002 UBERON:0013647 The nerve to the Pterygoideus externus frequently arises in conjunction with the buccinator nerve, but it may be given off separately from the anterior division of the mandibular nerve. It enters the deep surface of the muscle.