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Posterior perforated substance

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Brain: Posterior perforated substance
Gray717
Coronal section of brain immediately in front of pons. (Post. perf. substance labeled at lower left.)
[[Image:|250px|center|]]
Latin substantia perforata posterior, substantia perforata interpeduncularis
Gray's subject #188 800
Part of
Components
Artery
Vein
BrainInfo/UW ancil-726
MeSH [1]

The depressed area between the crura is termed the interpeduncular fossa, and consists of a layer of gray matter, the posterior perforated substance, which is pierced by small apertures for the transmission of blood vessels; its lower part lies on the ventral aspect of the medial portions of the tegmenta, and contains a nucleus named the interpeduncular ganglion; its upper part assists in forming the floor of the third ventricle.

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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 As such, some of the information contained herein may be outdated.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.

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