Put the following events describing the flow of cerebrospinal fluid in order by writing the correct numeral (1-8) in the blanks.
CSF enters the subarachnoid space.
CSF travels down the cerebral aqueduct.
CSF passes through the interventricular foramina.
CSF enters the fourth ventricle.
CSF passes through the two lateral and one median apertures.
CSF is released by ependymal cells.
CSF enters the third ventricle.
CSF enters the superior sagittal sinuses