Posterior inferior cerebellar artery
3520722
211888743
2008-05-12T15:38:31Z
D.c.camero
6953343
/* Diseases */ Formating
{{Infobox Artery
| Name = {{PAGENAME}}
| Latin = arteria cerebelli inferior posterior
| GraySubject = 148
| GrayPage = 580
| Width = 250
| Image = CerebellumArteries.jpg
| Caption = The three major arteries of the cerebellum: the SCA, AICA, and PICA. (Posterior inferior cerebellar artery is PICA.)
| Width2 = 335
| Image2 = Circle of Willis en.svg
| Caption2= Diagram of the arterial circulation at the base of the brain. (PICA is labeled at bottom right.)
| BranchFrom = [[vertebral artery]]
| BranchTo = medial branch <BR> lateral
| Vein = [[inferior cerebellar veins]]
| Supplies = [[cerebellum]], [[choroid plexus]] of the [[fourth ventricle]]
| MeshName =
| MeshNumber =
| DorlandsPre = a_61
| DorlandsSuf = 12154613
}}
The '''posterior inferior cerebellar artery''' (PICA), the largest branch of the [[vertebral artery|vertebral]], is one of the three main [[artery | arterial]] [[blood]] supplies for the [[cerebellum]].
==Course==
It winds backward around the upper part of the [[medulla oblongata]], passing between the origins of the [[vagus]] and [[accessory nerve]]s, over the [[inferior peduncle]] to the under surface of the [[cerebellum]], where it divides into two branches.
The medial branch is continued backward to the notch between the two hemispheres of the cerebellum; while the lateral supplies the under surface of the cerebellum, as far as its lateral border, where it anastomoses with the [[anterior inferior cerebellar]] and the [[superior cerebellar]] branches of the [[basilar artery]].
Branches from this artery supply the [[choroid plexus]] of the [[fourth ventricle]].
==Diseases==
[[Infarction]] of this artery due to [[thrombosis]] or [[stroke]] leads to [[PICA syndrome]], a [[neurology | neurological disease]] with characteristic, [[stereotype]]d symptoms.
<br/><br/>
==External links==
* {{DiseasesDB|10449}}
* {{SUNYAnatomyLabs|28|09|02|25}}
* {{RocheLexicon|13048.000-1}}
[[Image:Arteries_beneath_brain_Gray_closer.jpg|thumb|right|335px|The arteries of the base of the brain. Posterior inferior cerebellar artery labeled at bottom. The [[temporal lobe|temporal]] pole of the [[cerebrum]] and a portion of the [[cerebellum|cerebellar]] hemisphere have been removed on the right side. Inferior aspect (viewed from below).]]
{{neuroanatomy-stub}}
{{circulatory-stub}}
{{Gray's}}
{{Arteries of head and neck}}
[[Category:Neuroanatomy]]
[[Category:Arteries]]
[[Category:Head and neck]]
[[de:Arteria cerebelli inferior posterior]]
[[nl:Arteria cerebelli inferior posterior]]
[[nds:Arteria cerebelli inferior posterior]]