Deep head medial side of lateral pterygoid plate and fossa between medial and lateral plates . Superficial head : Tuberosity of maxilla and pyramidal process of palatine bone
Medial aspect of angle of mandible
Elevates the mandible and assits in closing the jaw. Aassits the lateral pterygoids in moving the jaw side-to-side.
Nerve to medial pterygoid (main trunk of mandibular nerve (V))