10 Facts About Trigeminal nerve

Motor division of the trigeminal nerve derives from the basal plate of the embryonic pons, and the sensory division originates in the cranial neural crest.

The ophthalmic Trigeminal nerve carries sensory information from the scalp and forehead, the upper eyelid, the conjunctiva and cornea of the eye, the nose, the nasal mucosa, the frontal sinuses and parts of the meninges .

The maxillary Trigeminal nerve 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 Trigeminal nerve carries sensory information from the lower lip, the lower teeth and gums, the chin and jaw, parts of the external ear and parts of the meninges.

The mandibular Trigeminal nerve carries touch-position and pain-temperature sensations from the mouth.

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.

Sensory function of the trigeminal nerve is to provide tactile, proprioceptive, and nociceptive afference to the face and mouth.

Trigeminal nerve carries general somatic afferent fibers, which innervate the skin of the face via ophthalmic, maxillary and mandibular divisions.

The trigeminal nerve carries special visceral efferent axons, which innervate the muscles of mastication via the mandibular division.

Trigeminal nerve nucleus extends throughout the brainstem, from the midbrain to the medulla, continuing into the cervical cord .