Cerebrospinal Fluid is Produced by ________ and It ________

Question

Cerebrospinal fluid is produced by ________ and it ________.
A)dura mater; maintains a stable ionic concentration in the CNS
B)choroid plexuses in the ventricles; protects the brain from blows to the skull
C)arachnoid villi in the dura sinus; provides a pathway to the blood for waste
D)capillaries in the dura mater of the ventricles; moistens the surface of the brain

Accepted Answer

Cerebrospinal fluid is produced by the choroid plexuses in the ventricles and it serves to protect the brain from blows to the skull by acting as a cushion. While it does help with maintaining a stable ionic concentration and moistening the surface of the brain, these are not the primary functions of CSF. Additionally, arachnoid villi provide a pathway for CSF to enter the bloodstream, but this is not the direct function of CSF production.