The Probert Encyclopaedia of Medicine

PTERYGOIDEUS MEDIAL

The medial pterygoideus (internal pterygoid) muscle is located on the side of the jaw. It is thick and quadrilateral in form, similar to the masseter muscle, which lies just above it. The muscle originates from the pterygoid fossa of the sphenoid bone and the tuberosity of the maxilla and extends downward and outward to the angle and ramus of the mandible. It is innervated by mandibular branches of the trigeminal nerve and supplied by the medial pterygoid artery. This muscle raises the lower jaw to close the mouth and is used in chewing.
Research Pterygoideus Medial