Vavascular "glandular" tissue that forms cerebrospinal fluid, cerebrospinal
fluid (liquor cerebrospinalis). The fluid accumulates inside
the cerebral ventricles. Choroidal braids occur in the 4.de and 3rd ventricles as well as in the two lateral ventricles, The braids deliver cerebrospinal fluid into the
ventricular system without interruption. The cerebrospinal fluid flows out of the ventricular system into
the subarachnoid space through three holes in
4.de the back wall of the ventricle.