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| − | The '''dorsal nucleus of the vagus nerve''' (or '''posterior motor nucleus of vagus''') is a [[cranial nerve nucleus]] for the [[vagus nerve]] that |
+ | The '''dorsal nucleus of the vagus nerve''' (or '''posterior motor nucleus of vagus''') is a [[cranial nerve nucleus]] for the [[vagus nerve]] in the medulla that lies under the floor of the [[fourth ventricle]]. It mostly serves [[parasympathetic]] vagal functions in the [[gastrointestinal tract]], [[lungs]], and other [[thoracic]] and [[abdominal]] vagal innervations. The cell bodies for the preganglionic parasympathetic vagal neurons that innervate the heart reside in the nucleus ambiguus. |
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| + | Additional cell bodies are found in the [[nucleus ambiguus]], which give rise to the branchial efferent motor fibers of the vagus nerve (CN X) terminating in the laryngeal, pharyngeal muscles, and musculus uvulae. |
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==Additional images== |
==Additional images== |
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Image:Gray698.png|Primary terminal nuclei of the afferent (sensory) cranial nerves schematically represented; lateral view. |
Image:Gray698.png|Primary terminal nuclei of the afferent (sensory) cranial nerves schematically represented; lateral view. |
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</gallery> |
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| + | ==See also== |
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| + | *[[Wernicke's encephalopathy]] |
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==External links== |
==External links== |
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Latest revision as of 09:42, 15 November 2013
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| Brain: Posterior nucleus of vagus nerve | ||
|---|---|---|
 | ||
| Nuclei of origin of cranial motor nerves schematically represented; lateral view. ("X" visible at bottom center.) | ||
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| #9 is vagus nerve and nucleus | ||
| Latin | nucleus posterior nervi vagi | |
| Gray's | subject # | |
| Part of | ||
| Components | ||
| Artery | ||
| Vein | ||
| BrainInfo/UW | hier-752 | |
| MeSH | [1] | |
The dorsal nucleus of the vagus nerve (or posterior motor nucleus of vagus) is a cranial nerve nucleus for the vagus nerve in the medulla that lies under the floor of the fourth ventricle. It mostly serves parasympathetic vagal functions in the gastrointestinal tract, lungs, and other thoracic and abdominal vagal innervations. The cell bodies for the preganglionic parasympathetic vagal neurons that innervate the heart reside in the nucleus ambiguus.
Additional cell bodies are found in the nucleus ambiguus, which give rise to the branchial efferent motor fibers of the vagus nerve (CN X) terminating in the laryngeal, pharyngeal muscles, and musculus uvulae.
Additional images
See also
External links
- Dictionary at eMedicine dorsal+nucleus+of+vagus+nerve
- Brainstem at UWisc 08CNX
- MedEd at Loyola GrossAnatomy/h_n/cn/cn1/cn10.htm
- Overview at mcgill.ca
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