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Human Anatomy: Muscle Groups

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Human Anatomy



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Muscle Function & Other Pertinent Medical Information
- LATERAL PTERYGOID -
ORIGIN: Upper head: infratemporal surface of sphenoid bone. Lower head: lateral surface of lateral pterygoid plate
INSERTION: Pterygoid fovea below condyloid process of mandible and intra-articular cartilage of temporomandibular joint
ACTION: Depresses and protracts mandible to open mouth. Pulls forward cartilage of joint during opening of mouth
NERVE: Nerves to lateral pterygoid (anterior division of mandibular nerve (V))













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