ventricular system

Scheme

showing relations of the ventricles to the surface of the brain.

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Drawing of a

cast of the ventricular cavities, viewed from above. (Retzius.)

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{{Information |description = |Other fields 1 = {{Information field|Name={{Ucfirst:{{Plate}}}}|Value=716}} |date = {{Other date|before|1858}} |source = *{{cite book |year=1918 |author=[[:en:Henry Gray|Henry Gray]] |title=Anatomy of the Human Body }} (See "{{Section header|Book}}" section below) *{{Gray"s Anatomy/link|716}} |author = {{Creator:Henry Vandyke Carter}} |other_versions = |permission = }} == {{Section header|Book}} == {{Gray"s Anatomy}} =={{int:license-header}}== {{PD-scan|PD-old-100-1923}} [[Category:Gray"s Anatomy plates|0716]] [[Category:Neuroanatomy]] [[Category:Human brain (horizontal section)]] [[Category:Human brain (superior view)]] [[Catego

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Hirnstrukturen

in der Mittellinie.

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The ventricular system in the brain is composed of cerebrospinal fluid (CSF)-filled ventricles and their connecting foramina. CSF is produced by ependymal cells which line the ventricles. They are continuous with the central canal. Ventricles contain around 20% of the total average adult CSF volume, around 20-25 mL.

The ventricular system consists of:

The interconnections between the ventricles occur through the following:

interventricular foramen (of Monro): lateral to third
cerebral aqueduct (of Sylvius): third to fourth
median aperture (of Magendie): fourth to cisterna magna
two lateral apertures (of Luschka): fourth to cerebellopontine cistern

Both the cisterna magna and the cerebellopontine cistern are in the subarachnoid space. This space is continuous with the subarachnoid space around the cord down to the level of the cauda equina.

Major CSF production comes from choroid plexus found in the lateral, third and fourth ventricles of the brain which are highly vascularized epithelial tissue masses . Notably, choroid plexus is not found in the frontal or occipital horns of lateral ventricles, nor in the cerebral aqueduct.