masseter

There was synchronous spasm in the masseter muscles, resulting in elevation of the inferior maxilla.

The opening of the sinus is most commonly situated at the under margin of the mandible a little in front of the masseter muscle.

This is especially true of the zygomatic division of the deep masseter, which inserts on the angular process.

The masseteric fossa receives the insertion of the rostral or superficial division of the masseter muscle.

The facial artery can be distinctly felt as it passes over the upper jaw at the front edge of the masseter muscle.