posterior inferior cerebellar artery

(redirected from Posterior inferior cerebellar arteries)

pos·te·ri·or in·fe·ri·or cer·e·bel·lar ar·ter·y

[TA]
origin, intracranial part of vertebral artery; distribution, lateral medulla, choroid plexus of fourth ventricle, and cerebellum; anastomoses, superior cerebellar and anterior inferior cerebellar artery; gives rise to posterior spinal artery [TA], cerebellar tonsillar branch [TA], and choroidal branch to fourth ventricle [TA].

pos·te·ri·or in·fe·ri·or cer·e·bel·lar ar·te·ry

(pos-tēr'ē-ŏr in-fēr'ē-ŏr ser'ĕ-bĕl'lar ahr'tĕr-ē) [TA]
Origin, intracranial part of vertebral artery;distribution, lateral medulla, choroid plexus of fourth ventricle, and cerebellum; anastomoses, superior cerebellar and anterior inferior cerebellar artery; gives rise to posterior spinal artery [TA], cerebellar tonsillar branch [TA], and choroidal branch to fourth ventricle [TA].
Synonym(s): arteria inferior posterior cerebelli.

posterior inferior cerebellar artery

A branch of the vertebral arteries; it runs dorsally along the edge of the hindbrain and supplies the choroid plexus of the fourth ventricle, the lateral hindbrain, the inferior cerebellar peduncle, and posterior regions of the cerebellum.
See: brain (Major arteries of the brain) for illus.
See also: artery
References in periodicals archive ?
c) Left internal carotid injection in late arterial phase showing a PTA that supplies the anterior inferior cerebellar arteries (AICA) and inferior vermian (arrow) and hemispheric (arrowhead) branches of posterior inferior cerebellar arteries (PICA).
These structural abnormalities in CM-1 may include stretching of cranial nerves or direct compression of brain stem nuclei, compression of the posterolateral part of the medulla and the upper cervical spinal cord, vascular distortion in the territories irrigated by the vertebral and posterior inferior cerebellar arteries, and pressure on the rootlets of C1, C2, and the vagus nerves (4,5).
The less significant posterior spinal arteries arise from the cerebral circulation, most notably the posterior inferior cerebellar arteries, as branches from the vertebral arteries.
The posterior inferior cerebellar arteries arise from the vertebral arteries and supply the lateral medulla and inferior part of the cerebellum.

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