The cranial nerves in this model are numbered according to their Roman numerals.

Olfactory - I

Optic - II

Oculomotor - III

Trochlear - IV

Trigeminal - V

Abducens - VI

Facial - VII

Vestibulocochlear - VIII

Glossopharyngeal - IX

Vagus - X

Accessory - XI

Hypoglossal (on the left) - XII