Hypoglossal nerve

Hypoglossal nerve
The hypoglossal nerve is the twelfth cranial nerve. The twelve cranial nerves, the hypoglossal nerve included, emerge from or enter the skull (the cranium), as opposed to the spinal nerves which emerge from the vertebral column. The hypoglossal nerve supplies the muscles of the tongue. (The Greek "hypo-", under and "-glossal" from A"glossa", the tongue = under the tongue). Paralysis of the hypoglossal nerve affects the tongue. It impairs speech (it sounds thick) and causes the tongue to deviate toward the paralyzed side. In time, the tongue diminishes in size (atrophies).

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hypoglossal nerve n either of the 12th and final pair of cranial nerves which are motor nerves arising from the medulla oblongata and supplying muscles of the tongue and hyoid apparatus in higher vertebrates called also hypoglossal, twelfth cranial nerve

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the twelfth cranial nerves (XII), which supplies the muscles of the tongue and is therefore responsible for the movements of talking and swallowing.

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nervus hypoglossus.

Medical dictionary. 2011.

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Look at other dictionaries:

  • Hypoglossal nerve — Infobox Nerve Name = Hypoglossal nerve Latin = nervus hypoglossus GraySubject = 207 GrayPage = 914 Caption = Hypoglossal nerve, cervical plexus, and their branches. Caption2 = Innervates = genioglossus, hyoglossus, styloglossus BranchFrom =… …   Wikipedia

  • hypoglossal nerve — noun supplies intrinsic muscles of the tongue and other tongue muscles • Syn: ↑hypoglossal, ↑nervus hypoglosus, ↑twelfth cranial nerve • Hypernyms: ↑cranial nerve …   Useful english dictionary

  • hypoglossal nerve — noun Date: 1831 either of the 12th and final pair of cranial nerves which are motor nerves arising from the medulla oblongata and supplying muscles of the tongue in higher vertebrates called also hypoglossal …   New Collegiate Dictionary

  • hypoglossal nerve — the twelfth cranial nerve (XII), which supplies the muscles of the tongue and is therefore responsible for the movements of talking and swallowing …   The new mediacal dictionary

  • hypoglossal nerve — hy′poglos′sal nerve′ n. anat. either one of the twelfth pair of cranial nerves, consisting of motor fibers that innervate the muscles of the tongue • Etymology: 1840–50 …   From formal English to slang

  • hypoglossal nerve — /haɪpəˌglɒsəl ˈnɜv/ (say huypuh.glosuhl nerv) noun either of the last pair of cranial nerves which gives rise to the movements of the tongue; twelfth cranial nerve …  

  • hypoglossal nerve — Anat. either one of the twelfth pair of cranial nerves, consisting of motor fibers that innervate the muscles of the tongue. [1840 50] * * * …   Universalium

  • Lingual branches of hypoglossal nerve — Infobox Nerve Name = PAGENAME Latin = rami linguales nervi hypoglossi GraySubject = GrayPage = Caption = Hypoglossal nerve, cervical plexus, and their branches. Caption2 = Plan of hypoglossal nerve. Innervates = BranchFrom = hypoglossal nerve… …   Wikipedia

  • hypoglossal nerve descending — radix superior ansae cervicalis …   Medical dictionary

  • hypoglossal nucleus — n a nucleus in the floor of the fourth ventricle of the brain that is the origin of the hypoglossal nerve * * * nucleus of hypoglossal nerve n. nervi hypoglossi …   Medical dictionary

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