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Cranial Nerve V: The Trigeminal Nerve Stemming from the lateral superior margin of the left and right side of the pons, this nerve branches into three: V/I ophthalmic, V/II maxillary and V/III mandibular nerves. These branches exit the skull through the superior orbital fissure (V/I), the foramen rotundum (V/II) and the foramen ovale (V/III). This nerve governs the sensory innervation of the face, sinuses and teeth.
And the vagus nerve brings sensory information back from the ear, tongue, pharynx and larynx. The term vagus (Latin for wandering) is apt because the vagus nerve wanders all the way down from the brainstem to the colon, a long wandering trek. Complete interruption of the vagus nerve causes a characteristic syndrome.The back part of the palate (the soft palate) droops on that side.The capacity to gag (the gag reflex) is also lost on that side.nd the vagus nerve brings sensory information back from the ear, tongue, pharynx and larynx. The term vagus (Latin for wandering) is apt because the vagus nerve wanders all the way down from the brainstem to the colon, a long wandering trek. Complete interruption of the vagus nerve causes a characteristic syndrome.