Arachnoid Granulations

Some articles on arachnoid granulations:

Cerebrospinal Fluid - Circulation
... CSF is reabsorbed into venous sinus blood via arachnoid granulations ... that CSF returns to the vascular system by entering the dural venous sinuses via the arachnoid granulations (or villi) ... substantial role in CSF reabsorbtion, in particular in the neonate, in which arachnoid granulations are sparsely distributed ...