spinal trigeminal nucleus
{{Short description|Medullal nucleus receiving skin information from the ipsilateral face}}
{{Infobox brain
| Name = Spinal trigeminal nucleus
| Latin = nucleus spinalis nervi trigemini
| Image = Gray696.svg
| Caption = The cranial nerve nuclei schematically represented; dorsal view. Motor nuclei in red; sensory in blue. (Trigeminal nerve nuclei are at "V".)
| Image2 = Lower pons horizontal KB.svg
| Caption2 = Horizontal section through the lower part of the pons showing the spinal trigeminal nucleus (#11).
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| Components =
| Artery =
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}}
The spinal trigeminal nucleus is a nucleus in the medulla that receives information about deep/crude touch, pain, and temperature from the ipsilateral face. In addition to the trigeminal nerve (CN V), the facial (CN VII), glossopharyngeal (CN IX), and vagus nerves (CN X) also convey pain information from their areas to the spinal trigeminal nucleus.[http://thalamus.wustl.edu/course/brstem.html Brainstem Nuclei] {{webarchive|url=https://web.archive.org/web/20070413030711/http://thalamus.wustl.edu/course/brstem.html |date=2007-04-13 }} Thus the spinal trigeminal nucleus receives afferents from cranial nerves V, VII, IX, and X.
Anatomy
= Structure =
The spinal nucleus is composed of three subnuclei: subnucleus oralis (pars oralis), subnucleus caudalis (pars caudalis), and subnucleus interpolaris (pars interpolaris). The subnucleus oralis is associated with the transmission of discriminative (fine) tactile sense from the orofacial region, and is continuous with the principal sensory nucleus of V. The subnucleus interpolaris is also associated with the transmission of tactile sense, as well as dental pain, whereas the subnucleus caudalis is associated with the transmission of nociception and thermal sensations from the head.
This region is also denoted at sp5 in other neuroanatomical nomenclature.{{cite book|author=George Paxinos|title=The Mouse Brain in Stereotaxic Coordinates|url=https://books.google.com/books?id=EHy1QN1xv0gC|access-date=16 August 2013|year=2004|publisher=Gulf Professional Publishing|isbn=978-0-12-547640-9}}
= Efferents =
This nucleus projects to the ventral posteriomedial (VPM) nucleus in the contralateral thalamus via the ventral trigeminal tract.{{cite journal | vauthors = Mercer JG, Moar KM, Findlay PA, Hoggard N, Adam CL | title = Association of leptin receptor (OB-Rb), NPY and GLP-1 gene expression in the ovine and murine brainstem | journal = Regul. Pept. | volume = 75-76 | pages = 271–278 | date = September 1998 | pmid = 9802419 | doi = 10.1016/s0167-0115(98)00078-0 | s2cid = 34348758 }}
= Relations =
See also
References
{{Reflist}}
{{Pons}}
{{Cranial nerves}}
{{Authority control}}
Category:Glossopharyngeal nerve
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