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Third ventricle
The third ventricle (ventriculus tertius) is one of four connected fluid-filled cavities comprising the ventricular system within the human brain. It is a median cleft between the two thalami, and is filled with cerebrospinal fluid (CSF). It is in the midline, between the left and right lateral ventricles. Additional recommended knowledge
CommunicationIt communicates with the lateral ventricles anteriorly by the interventricular foramina (of Monro). It communicates with the fourth ventricle posteriorly by the cerebral aqueduct (of Sylvius). DevelopmentDevelopmentally the third ventricle represents the cavity of the diencephalon. BoundariesIt is bounded by the thalamus and hypothalamus on both the left and right sides. The lamina terminalis forms the anterior wall of the third ventricle. ProtrusionsThere are two protrusions on the front of the third ventricle:
In casts of the ventricular system, a small 'hole' may be seen in the body of the third ventricle. This is formed where the two thalami are joined together at the interthalamic adhesion (not seen in all people). See also
Additional images
Categories: Cerebrum | Neuroanatomy |
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Third_ventricle". A list of authors is available in Wikipedia. |