Ventricles of the brain (Latin)

The ventriculi laterales are two C-shaped cavities, one in each cerebral hemisphere. We can observe the left ventriculus lateralis in detail in this left lateral perspective of the brain. Each ventriculus lateralis has a pars centralis (located in the region of the lobus parietalis), an atrium (connecting the pars centralis with the cornu posterius and the cornu inferius) and three horns projecting into the lobes for which they are named: the cornu frontale (or anterius) horn, the cornu occipitale (or posterius) horn, and the cornu temporale (or inferius). The foramina interventriculare (or foramina of Monro) are channels that connect the paired ventriculi laterales with the ventriculus tertius. The ventriculus tertius is the narrow vertical cavity of the diencephalon with several outpocketings: the recessus supraopticus, recessus infundibuli, recessus suprapinealis, and recessus pinealis. It is drained by the aquaeductus mesencephali (of Sylvius) that conveys CSF into the ventriculus quartus. The ventriculus quartus is a diamond-shaped cavity located in the brainstem. It has two lateral extensions, the recessus lateralis ventriculi quarti and a median one, the apertura mediana ventriculi quarti (not shown in this perspective). This ventricle is the most inferior and extends into the canalis centralis of the spinal cord.