Lateral pterygoid

Lateral pterygoid

(Science: anatomy, muscle) origin, inferior head from lateral lamina of pterygoid process; superior head from infratemporal crest and adjacent greater wing of the sphenoid; insertion, into pterygoid pit of mandible and articular disk; action, brings jaw forward, opens jaw; nerve supply, nerve to lateral pterygoid from mandibular division of trigeminal.

Synonym: musculus pterygoideus lateralis, external pterygoid muscle, musculus pterygoideus externus.

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