Inferior salivatory nucleus

Inferior salivatory nucleus

Infobox Brain
Name = Inferior salivatory nucleus
Latin = nucleus salivatorius inferior
GraySubject =
GrayPage =


Caption = The inferior salivatory nucleus is one of the components of the glossopharyngeal nerve, which stimulates secretion from the parotid gland.


Caption2 =
IsPartOf =
Components =
Artery =
Vein =
Acronym =
BrainInfoType = hier
BrainInfoNumber = 761
MeshName =
MeshNumber =
DorlandsPre = n_11
DorlandsSuf = 12583286
In the brain, the inferior salivatory nucleus is a cluster of neurons controlling the parasympathetic input to the parotid gland. It is one of the components of the glossopharyngeal nerve (cranial nerve IX).

Location

Its precise location in humans has not yet been identified, but in other mammals it is located in the medulla within the general visceral efferent cell column, superior to the nucleus ambiguus and inferior to the superior salivatory nucleus.

Pathway

While still in the medulla, fibers of the inferior salivatory nucleus join with fibers of the gustatory nucleus, nucleus ambiguus, and spinal nucleus of the trigeminal nerve, and exit the medulla as the mixed glossopharyngeal nerve (cranial nerve IX). It sends fibers through the glossopharyngeal nerve's tympanic nerve and into the tympanic plexus. Exiting the plexus within the lesser petrosal nerve, these preganglionic fibers synapse with cells in the otic ganglion, which send postganglionic fibers into the mandibular division of the trigeminal nerve, then into the auriculotemporal nerve, finally reaching their target, the parotid gland.

Function

Parasympathetic input from fibers of the inferior salivatory nucleus stimulates the parotid gland to vasodilate and secrete saliva.

ee also

* Glossopharyngeal nerve
* Superior salivatory nucleus


=Additional

References

*

External links

*
* http://sprojects.mmi.mcgill.ca/cns/histo/systems/cranialnerves/main.htm


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • salivatory nucleus inferior — n. salivatorius inferior …   Medical dictionary

  • salivatory nucleus caudal — n. salivatorius inferior …   Medical dictionary

  • Nucleus ambiguus — Brain: Nucleus ambiguus Transverse section of medulla oblongata below the middle of the olive. ( Nucleus ambiguus labeled at center right.) Gray s subject #187 …   Wikipedia

  • Nucleus raphe magnus — Brain: Nucleus raphe magnus Section of the medulla oblongata at about the middle of the olive. (Raphe nuclei not labeled, but raphe labeled at left.) Latin nucleus raphes magnus NeuroNames …   Wikipedia

  • Nucleus raphe obscurus — Brain: Nucleus raphe obscurus Section of the medulla oblongata at about the middle of the olive. (Raphe nuclei not labeled, but raphe labeled at left.) Latin nucleus raphes obscurus NeuroNames …   Wikipedia

  • Nucleus raphe pallidus — Brain: Nucleus raphe pallidus Section of the medulla oblongata at about the middle of the olive. (Raphe nuclei not labeled, but raphe labeled at left.) Latin nucleus raphes pallidus NeuroNames …   Wikipedia

  • Nucleus prepositus hypoglossi — Located in the medulla, the nucleus prepositus hypoglossi or NPH is part of the horizontal gaze holding system. It functions as a neural integrator. A cross section of the lower pons showing the nucleus prepositus hypoglossi (#5) labeled at the… …   Wikipedia

  • Salivatory nuclei — The salivatory nuclei are the:*Inferior salivatory nucleus *Superior salivatory nucleus …   Wikipedia

  • nucleus salivatorius superior — [TA] superior salivatory nucleus: a cluster of cells in the posterolateral pons near the internal genu of the facial nerve and generally continuous with the inferior salivatory nucleus; its cells comprise the parasympathetic outflow of the facial …   Medical dictionary

  • nucleus salivatorius inferior — [TA] inferior salivatory nucleus: a short column of cells in the posterolateral part of the reticular formation in the lower pons and upper medulla oblongata; they comprise the parasympathetic outflow of the glossopharyngeal nerve for the supply… …   Medical dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”