Ventricular system
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The ventricular system in the brain is composed of CSF-filled ventricles and their connecting foraminae. CSF is produced by ependymal cells which line the ventricles. They are continuous with the central canal. Ventricles contain around 1/5 of normal adult CSF volume, which is around 20-25 ml.
The ventricular system consists of:
- two lateral ventricles
- a midline third ventricle
- a fourth ventricle
The interconnections between the ventricles occursoccur 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.
Development
Embryologically, ventricles originate from the central lumen of the neural tube and the cerebral vesicles to which it gives rise.
-<p>The <strong>ventricular system</strong> in the brain is composed of <a href="/articles/csf">CSF</a>-filled ventricles and their connecting foraminae. CSF is produced by ependymal cells which line the ventricles. They are continuous with the <a href="/articles/central-canal">central canal</a>. Ventricles contain around 1/5 of normal adult CSF volume, which is around 20-25 ml.</p><ul>- +<p>The <strong>ventricular system</strong> in the brain is composed of <a href="/articles/csf">CSF</a>-filled ventricles and their connecting foraminae. CSF is produced by ependymal cells which line the ventricles. They are continuous with the <a href="/articles/central-canal">central canal</a>. Ventricles contain around 1/5 of normal adult CSF volume, which is around 20-25 ml.</p><p>The ventricular system consists of:</p><ul>
-<li><a href="/articles/third-ventricle">third ventricle</a></li>-<li><a href="/articles/fourth-ventricle">fourth ventricle</a></li>-</ul><p>The interconnections between the ventricles occurs through the following:</p><ul>- +<li>a midline <a href="/articles/third-ventricle">third ventricle</a>
- +</li>
- +<li>a <a href="/articles/fourth-ventricle">fourth ventricle</a>
- +</li>
- +</ul><p>The interconnections between the ventricles occur through the following:</p><ul>
-</ul><p>Both the cisterna magna and the cerebellopontine cistern are in the <a href="/articles/subarachnoid-space">subarachnoid space</a>. This space is continuous with the subarachnoid space around the cord down to the level of the <a href="/articles/cauda-equina">cauda equina</a>.</p><h4>Development</h4><p>Embryologically, ventricles originate from the central lumen of the <a title="Neural tube" href="/articles/neural-tube">neural tube</a> and the cerebral vesicles to which it gives rise.</p>- +</ul><p>Both the cisterna magna and the cerebellopontine cistern are in the <a href="/articles/subarachnoid-space">subarachnoid space</a>. This space is continuous with the subarachnoid space around the cord down to the level of the <a href="/articles/cauda-equina">cauda equina</a>.</p><h4>Development</h4><p>Embryologically, ventricles originate from the central lumen of the <a href="/articles/neural-tube">neural tube</a> and the cerebral vesicles to which it gives rise.</p>
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