The posterior perforated substance is a layer of gray matter which is pierced by small apertures for the transmission of blood vessels. Its inferior part lies on the ventral aspect of the medial portions of the tegmenta and contains the interpeduncular nucleus; its superior part forms part of the floor of the third ventricle.[citation needed]
| Posterior perforated substance | |
|---|---|
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| Details | |
| Identifiers | |
| Latin | substantia perforata posterior, substantia perforata interpeduncularis |
| NeuroNames | 1580 |
| Anatomical terms of neuroanatomy | |
The PPS is situated between the two mesencephalic cerebral peduncles,[1]: 476 and posterior/caudal to the two mammillary bodies.[1]: 470 It is perforated by branches of the posterior cerebral arteries en route to the thalamus and basal ganglia.[1]: 473 The PPS forms part of the floor of the third ventricle,[1]: 469 and part of the roof of the interpeduncular cistern.[1]: 440
See also edit
Additional images edit
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Human brainstem anterior view
References edit
This article incorporates text in the public domain from page 800 of the 20th edition of Gray's Anatomy (1918)
External links edit
- Atlas image: n2a2p1 at the University of Michigan Health System
- "Anatomy diagram: 13048.000-1". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2014-01-01.
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