Posterior inferior cerebellar artery
- Posterior inferior cerebellar artery
Infobox Artery
Name = PAGENAME
Latin = arteria cerebelli inferior posterior
GraySubject = 148
GrayPage = 580
Width = 250
Caption = The three major arteries of the cerebellum: the SCA, AICA, and PICA. (Posterior inferior cerebellar artery is PICA.)
Width2 = 335
Caption2= Diagram of the arterial circulation at the base of the brain. (PICA is labeled at bottom right.)
BranchFrom = vertebral artery
BranchTo = medial branch
lateral
Vein = inferior cerebellar veins
Supplies = cerebellum, choroid plexus of the fourth ventricle
MeshName =
MeshNumber =
DorlandsPre = a_61
DorlandsSuf = 12154613The posterior inferior cerebellar artery (PICA), the largest branch of the vertebral, is one of the three main 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 nerves, 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 neurological disease with characteristic, stereotyped symptoms.
External links
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2010.
Look at other dictionaries:
posterior inferior cerebellar artery — n an artery that usu. branches from the vertebral artery below its junction with the contralateral vertebral artery to form the basilar artery and that supplies much of the medulla oblongata, the inferior portion of the cerebellum, and part of… … Medical dictionary
anterior inferior cerebellar artery — n an artery that arises from the basilar artery either alone or by a common trunk with the internal auditory artery, divides into branches distributed to the anterior parts of the inferior surface of the cerebellum, and gives off a branch that… … Medical dictionary
posterior inferior cerebellar artery syndrome — Wallenberg s … Medical dictionary
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Cerebellar artery — Artery: Cerebellar artery The three major arteries of the cerebellum: the SCA, AICA, and PICA. Vein Cerebellar veins A cerebellar artery is an artery that provides blood t … Wikipedia
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Posterior spinal artery — Infobox Artery Name = PAGENAME Latin = arteria spinalis posterior GraySubject = 148 GrayPage = 579 Caption = The three major arteries of the cerebellum: the SCA, AICA, and PICA. (Posterior spinal artery is not labeled, but region is visible.)… … Wikipedia
