Posterior inferior cerebellar artery

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Artery: Posterior inferior cerebellar artery
The three major arteries of the cerebellum: the SCA, AICA, and PICA. (Posterior inferior cerebellar artery is PICA.)
Diagram of the arterial circulation at the base of the brain. (PICA is labeled at bottom right.)
Latin	arteria cerebelli inferior posterior
Gray's	subject #148 580
Supplies	cerebellum, choroid plexus of the fourth ventricle
Source	vertebral artery
Branches	medial branch lateral
Vein	inferior cerebellar veins
Dorlands / Elsevier	a_61/12154613

Please Take Over This Page and Apply to be Editor-In-Chief for this topic: There can be one or more than one Editor-In-Chief. You may also apply to be an Associate Editor-In-Chief of one of the subtopics below. Please mail us [1] to indicate your interest in serving either as an Editor-In-Chief of the entire topic or as an Associate Editor-In-Chief for a subtopic. Please be sure to attach your CV and or biographical sketch. The 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.

Additional images

The arteries of the base of the brain. Posterior inferior cerebellar artery labeled at bottom. The temporal pole of the cerebrum and a portion of the cerebellar hemisphere have been removed on the right side. Inferior aspect (viewed from below).

External links

• DDB 10449
• SUNY Labs 28:09-0225
• Roche Lexicon - illustrated navigator, at Elsevier 13048.000-1

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

nl:Arteria cerebelli inferior posterior