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Origin and insertion of the various muscles of mastication*
Location Description Temporalis Proximal: floor and deep surface of the temporal fossa Distal: tip and medial surface of the coronoid process and anterior border of ramus of mandible Masseter Proximal: inferior border and medial surface of zygomatic arch Distal: lateral surface of ramus of mandible and its coronoid process Lateral pterygoid Proximal superior head: infratemporal surface and infratemporal crest of greater wing of sphenoid bone Proximal inferior head: lateral surface of lateral pterygoid plate Distal: neck of mandible (pterygoid fovea); articular disk and capsule of temporomandibular joint Medial pterygoid Proximal deep head: medial surface of lateral pterygoid plate and pyramidal process of palatine bone Proximal superficial head: tuberosity of maxilla Distal: medial surface of ramus of the mandible, inferior to mandibular foramen
* The sites that have been resected or altered have been italicized.