Medial Pterygoid

Joe Muscolino

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The medial pterygoid is a muscle of mastication. The lateral pterygoid has been ghosted in.

The Medial Pterygoid is a muscle of mastication that moves the mandible at the temporomandibular joints (TMJs). The primary muscles of mastication are:



  • Sphenoid bone to the internal surface of the mandible.
    • The mandibular attachment is onto the angle and inferior border of the ramus.





  1. The medial pterygoid and masseter form a sling that supports the mandible.
  2. The medial pterygoid is said to have a deep head and a superficial head. The deep head attaches onto the sphenoid; the superficial head attaches onto the palatine bone and the maxilla.