CN XII | definition of CN XII by Medical dictionary
hypoglossal nerve (redirected from CN XII)
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Related to CN XII: CN IX
the twelfth cranial nerve
; its modality is purely motor, serving the intrinsic muscles of the tongue and other muscles beneath the tongue. See Appendix 3-5.
Either of the 12th pair of cranial nerves that innervate the muscles of the tongue.
Etymology: Gk, hypo + glossa, tongue
either of a pair of cranial nerves essential for swallowing and for moving the tongue. Each nerve has four major branches, communicates with the vagus nerve, and arises from nucleus XII in the brain. Also called nervus hypoglossus, twelfth cranial nerve
Hypoglossal nerve assessment
hypoglossal nerve the 12th CRANIAL NERVE of higher vertebrates, the motor nerve supplying the floor of the mouth and the tongue.