Third ventricle
The third ventricle is one of the four connected ventricles of the ventricular system within the mammalian brain. It is a slit-like cavity formed in the diencephalon between the two thalami, in the midline between the right and left lateral ventricles, and is filled with cerebrospinal fluid (CSF).
| Third ventricle | |
|---|---|
Third ventricle shown in red. | |
Blue – Lateral ventricles Cyan – Interventricular foramina (Monro) Yellow – Third ventricle Red – Cerebral aqueduct (Sylvius) Purple – fourth ventricle Green – continuous with the central canal (Apertures to subarachnoid space are not visible) | |
| Details | |
| Identifiers | |
| Latin | ventriculus tertius cerebri |
| MeSH | D020542 |
| NeuroNames | 446 |
| NeuroLex ID | birnlex_714 |
| TA98 | A14.1.08.410 |
| TA2 | 5769 |
| FMA | 78454 |
| Anatomical terms of neuroanatomy | |
Running through the third ventricle is the interthalamic adhesion, which contains thalamic neurons and fibers that may connect the two thalami.
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