Action: Protracts the mandible; opens the mouth; active in grinding actions of chewingOrigin - Superior head - greater wing of the sphenoid bone; inferior head - lateral surface of the lateral pterygoid plateInsertion - Superior head - capsule and & articular disk of the temporomandibular joint; inferior head - neck of the mandibleInnervation - Lateral pterygoid branch of the mandibular division of the trigeminal nerve (V)

1.
Action: Protracts the mandible; opens the mouth; active in grinding actions of chewing
Origin - Superior head - greater wing of the sphenoid bone; inferior head - lateral surface of the lateral pterygoid plate
Insertion - Superior head - capsule and & articular disk of the temporomandibular joint; inferior head - neck of the mandible
Innervation - Lateral pterygoid branch of the mandibular division of the trigeminal nerve (V)

External Obliques
Gluteus Minimus
Lateral Pterygoid
Extensor Carpi Radialis Brevis