Lateral Pterygoid

Region: Head & Neck Muscles · All head & neck muscles

Lateral Pterygoid at a glance

OriginSphenoid bone (infratemporal surface and lateral pterygoid plate)
InsertionNeck of the mandible, the TMJ disc and capsule
ActionsProtrudes the jaw; Opens the mouth; Moves the jaw to the opposite side
Nerve supplyTrigeminal nerve (CN V3)

◆ Good to know

It is the only muscle of mastication that opens the jaw, pulling the mandibular condyle and disc forward.

Please note: This page is an anatomy education summary for students and curious readers, not medical advice. Attachment points are given in their classic short form; individual anatomy varies, and detailed dissection-level descriptions belong in an anatomy atlas.