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]]