Dentate nucleus
2486066
211945258
2008-05-12T20:12:31Z
D.c.camero
6953343
/* External links */ Added cerebellum category
{{Mergeto|cerebellum#Deep_nuclei|date=September 2007}}
{{Infobox Brain|
Name = {{PAGENAME}} |
Latin = nucleus dentatus |
GraySubject = 187 |
GrayPage = 796 |
Image = Gray707.png |
Caption = Sagittal section through right cerebellar hemisphere. The right olive has also been cut sagitally. (Nucleus dentatus labeled at top.) |
Image2 = |
Caption2 = |
IsPartOf = [[cerebellum]] |
Components = |
Artery = [[superior cerebellar artery]] |
Vein = |
Acronym = |
BrainInfoType = hier |
BrainInfoNumber = 680 |
MeshName = |
MeshNumber = |
DorlandsPre = n_11 |
DorlandsSuf = 12580950 |
}}
The '''Dentate nucleus''' is located within the deep [[white matter]] of each cerebellar hemisphere. It is the largest of the four deep cerebellar nuclei, the others being the [[fastigial nucleus]] and the [[interposed nucleus]] (globose and emboliform nuclei combined). It is responsible for the planning, initiation and control of volitional movements. It therefore receives its afferents from the [[premotor cortex]] and the [[supplementary motor cortex]] (via the [[pontocerebellar system]]). Its efferents project via the [[superior cerebellar peduncle]] to the contralateral [[red nucleus]] and ventrolateral [[thalamus]] (crossing over at the pontomesencephalic junction).
It consists of an irregularly folded [[lamina]], of a grayish-yellow color, containing white fibers, and presenting on its antero-medial aspect an opening, the [[hilus]], from which most of the fibers of the [[superior peduncle]] emerge.
==Additional images==
<gallery>
Image:Gray683.png|Dissection of brain-stem. Lateral view.
Image:Gray684.png|Deep dissection of brain-stem. Lateral view.
Image:Gray685.png|Deep dissection of brain-stem. Lateral view.
Image:Gray709.png|Rhomboid fossa.
</gallery>
==External links==
* [http://www2.umdnj.edu/~neuro/studyaid/Practical2000/Q32.htm Photo at umdnj.edu]
* {{UMichAtlas|n2a7p6}}
* {{UMichAtlas|n2a7p9}}
* http://www.mona.uwi.edu/fpas/courses/physiology/neurophysiology/Cerebellum.htm
* http://www.neuroanatomy.wisc.edu/cere/text/P5/dentate.htm
{{Gray's}}
{{neuroscience-stub}}
{{Cerebellum}}
[[Category:Nervous system]]
[[Category:Cerebellum]]
[[de:Nucleus dentatus]]