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The Posterior inferior aspect of the cerebellum and brain stem

Course of posterior inferior cerebellar artery

Image #25-5

KEYWORDS: Brain, Cerebellum, Vasculature, Ventricules.

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The Posterior inferior aspect of the cerebellum and brain stem

Course of posterior inferior cerebellar artery

On the right side the tonsil has been removed. The restiform body and brachium pontis have also been cut away. The passage of the trunk of the posterior inferior cerebellar artery between the uvula (of the vermis) and the tonsil is demonstrated. The tela chorioidea of the fourth ventricle is in close relation to the artery from which branches pass to the choroid plexus. This dissection reveals the nidus avis cerebelli.

1 .	Posterior cerebellar incisure
2 .	Biventral lobule (dorsal paraflocculus)
3 .	Arachnoid (related to cisterna magna)
4 .	Postpyramidal fissure (fissura secunda)
5 .	Tonsil (ventral paraflocculus)
6 .	Clava
7 .	Posterior median septum
8 .	Pyramid (vermis)
9 .	Uvula (vermis) and posterior inferior cerebellar artery
10 .	Dentate nucleus (dissected)
11 .	Medial aperture fourth ventricle (foramen of Magendie)
12 .	Choroid plexus and choroidal arteries
13 .	Restiform body (inferior cerebellar peduncle)
14 .	Dorsal root cervical nerve II
15 .	Dorsal horn of spinal gray matter