Cranial nerve, twelfth
The twelfth cranial nerve is the hypoglossal 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 "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).

Medical dictionary. 2011.

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  • cranial nerve twelfth — nervus hypoglossus …   Medical dictionary

  • Twelfth cranial nerve — The twelfth cranial nerve is the hypoglossal 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… …   Medical dictionary

  • cranial nerve — noun any of the 12 paired nerves that originate in the brain stem • Hypernyms: ↑nerve, ↑nervus • Hyponyms: ↑olfactory nerve, ↑nervii olfactorii, ↑first cranial nerve, ↑optic nerve, ↑ …   Useful english dictionary

  • Nerve, twelfth cranial — The twelfth cranial nerve is the hypoglossal 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… …   Medical dictionary

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

  • Cranial nerve XII — The twelfth cranial nerve is the hypoglossal 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… …   Medical dictionary

  • Nerve, hypoglossal — 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… …   Medical dictionary

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  • 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… …   Medical dictionary

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