Cerebrospinal fluid 4. Trace the path of cerebrospinal fluid
from the sites of production to the sites of drainage; include
choroid plexuses, ependymal cells, the brain ventricles and central
canal of the spinal cord (collectively), the subarachnoid space,
arachnoid villi (granulations), and dural venous sinuses in your
description. How do ependymal cells promote CSF circulation?