LATERAL PTERYGOID
Origin
Upper head: infratemporal surface of sphenoid bone. Lower head: lat surface of lat pterygoid plate
Action
Depresses and protracts mandible to open mouth. Pulls forward cartilage of jnt during opening of mouth
Insertion
Pterygoid fovea below condyloid process of mandible and intra-articular cartilage of temporomandibular jnt
Nerve
Ns to lat pterygoid (ant div of mandibular N (Vc))
