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Bassett Collection of Stereoscopic Images of Human Anatomy

The Posterior inferior aspect of the cerebellum and brain stem

Foramen of Magendie

Image #25-4

KEYWORDS: Brain, Vasculature, Ventricules.

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Higher resolution images are available for a fee. Contact Drew Bourn, PhD, MLIS.

The Posterior inferior aspect of the cerebellum and brain stem
Foramen of Magendie
The right cerebellar tonsil has been removed from this specimen without disturbing the meninges related to its inner surfaces. The tela chorioidea (11) forms the posterior part of the roof of the fourth ventricle and borders a large opening inferiorly, the foramen of Magendie, which forms the communication between the ventricle and the cerebellomedullary cistern (cisterna magna). Two folds of choroid plexus which lie in the roof of the ventricle can be seen through the foramen. The right posterior inferior cerebellar artery is incompletely filled with red latex.
1 . Arachnoid membrane at border of cerebellomedullary cistern (cisterna magna)
2 . Tonsil (ventral paraflocculus)
3 . Postpyramidal fissure (fissura secunda)
4 . Clava
5 . Transverse cerebellar fissure
6 . Accessory nerve (CN XI)
7 . Dorsal root cervical nerve II
8 . Uvula (vermis)
9 . Posterior inferior cerebellar artery left
10 . Medullary substance of tonsil
11 . Tela chorioidea fourth ventricle
12 . Medial aperture fourth ventricle foramen of Magendie
13 . Restiform body (inferior cerebellar peduncle)
14 . Dorsal median sulcus
15 . Cervical part of spinal cord