Action: Elevates and protracts the mandibleOrigin - Medial surface of the lateral pterygoid plate, pyramidal process of the palatine bone, tuberosity of the maxillaInsertion - Medial surface of the ramus and angle of the mandibleInnervation - Medial pterygoid branch of the mandibular division of the trigeminal nerve (V)

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1.
Action: Elevates and protracts the mandible
Origin - Medial surface of the lateral pterygoid plate, pyramidal process of the palatine bone, tuberosity of the maxilla
Insertion - Medial surface of the ramus and angle of the mandible
Innervation - Medial pterygoid branch of the mandibular division of the trigeminal nerve (V)