The superior head of the lateral pterygoid is one of the muscles of mastication. It contributes to protraction of the mandible and lateral mandibular movement during chewing. This muscle originates from the infratemporal surface and infratemporal crest of the greater wing of the sphenoid bone and inserts onto the neck of the mandible. #anatomy #musclesofmastication #biomechanics #anatomyofmotion #jaw #tmj | Medical anatomy