Editing Trigeminal nerve (section)

===Sensory branches===
[[File:Trig innervation.svg|thumb|left|alt=Profile of the head, with the three sub-nerves color-coded|Dermatome distribution of the trigeminal nerve]]
The ophthalmic, maxillary and mandibular branches leave the skull through three separate [[Foramina of the skull|foramina]]: the [[superior orbital fissure]], the [[foramen rotundum]] and the [[foramen ovale (skull)|foramen ovale]], respectively. The ophthalmic nerve (V<sub>1</sub>) carries sensory information from the scalp and forehead, the upper eyelid, the conjunctiva and cornea of the eye, the nose (including the tip of the nose, except alae nasi), the nasal mucosa, the frontal sinuses and parts of the [[meninges]] (the [[Dura mater|dura]] and blood vessels). The maxillary nerve (V<sub>2</sub>) carries sensory information from the lower eyelid and cheek, the [[nares]] and upper lip, the upper teeth and gums, the nasal mucosa, the palate and roof of the pharynx, the maxillary, ethmoid and sphenoid sinuses and parts of the meninges. The mandibular nerve (V<sub>3</sub>) carries sensory information from the lower lip, the lower teeth and gums, the chin and jaw (except the angle of the jaw, which is supplied by C2-C3), parts of the external ear and parts of the meninges. The mandibular nerve carries touch-position and pain-temperature sensations from the mouth. Although it does not carry taste sensation (the [[chorda tympani]] is responsible for taste), one of its branches—the [[lingual nerve]]—carries sensation from the tongue.

The peripheral processes of mesencephalic nucleus of V neurons run in the motor root of the trigeminal nerve and terminate in the muscle spindles in the muscles of mastication. They are proprioceptive fibers, conveying information regarding the location of the masticatory muscles. The central processes of mesencephalic V neurons synapse in the motor nucleus V.