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Fourth ventricle

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Brain: Fourth ventricle
Gray701
Coronal section of the pons, at its upper part. (Fourth ventricle visible near top.)
Gray695
Transverse section of medulla oblongata below the middle of the olive. (Fourth ventricle visible near top.)
Latin '
Gray's subject #187 797
Part of
Components
Artery
Vein
BrainInfo/UW hier-617
MeSH A08.186.211.276.500

The fourth ventricle is one of the four connected fluid-filled cavities within the human brain. These cavities, known collectively as the ventricular system, consist of the left and right lateral ventricles, the third ventricle, and the fourth ventricle. The fourth ventricle extends from the cerebral aqueduct (aqueduct of Sylvius) to the obex, and is filled with cerebrospinal fluid (CSF).

The fourth ventricle has a characteristic diamond shape in cross-sections of the human brain. It is located within the pons or in the upper part of the medulla. CSF entering the fourth ventricle through the cerebral aqueduct can exit to the subarachnoid space of the spinal cord through two lateral foramina of Luschka (singular: foramen of Luschka) and a single, midline foramen of Magendie (see List of human anatomical parts named after people).

The fourth ventricle has a "roof" dorsally and a "floor" ventrally. The roof of the fourth ventricle is formed by the cerebellum, with the side "walls" formed by the cerebellar peduncles. Among the prominent features of the floor of the fourth ventricle are the:

External linksEdit


no:Fjerde ventrikkel

sk:IV. mozgová komora

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