mandibular

The more anterior fibers insert fleshily on the mandibular fossa.

The insertion is primarily a fleshy attachment on the mandibular fossa.

By this change in the mandibular arch the mouth becomes narrowed in an antero-posterior direction.

During stage H it already exhibits two distinct branches known as the mandibular and ophthalmic.

The ophthalmic branch of the fifth being situated near the anterior end of this, and the mandibular near the posterior end.