The lateral surface is convex and subcutaneous; the medial is concave, and affords attachment to the masseter.
The zygomatic arch is robust and provides a large area for attachment of the masseter muscle.
For the mouth to close it requires the following muscles: the masseter, temporalis, and medial pterygoid muscle.
The superficial masseter originates on the front edge of the zygoma, and the lateral masseter extends over most of its length.
The superficial masseter extends forwards along the zygoma.
The mandible is moved primary by the four muscles of mastication: the masseter, medial pterygoid, lateral pterygoid and the temporalis.
Here the nerve stimulator can be used in identifying the donor motor nerve to the masseter muscle.
Compared to the common wombat, the southern hairy-nosed wombat has a larger temporalis muscle and a smaller masseter muscle.
