Choroid plexus in the lateral ventricles produces CSF.
What happens at stage 1?
CSF flows through interventricular foramina into third ventricle.
What happens at stage 2?
Choroid plexus in the third ventricle adds more CSF.
What happens at stage 3?
CSF flows down cerebral aqueduct to fourth ventricle.
What happens at stage 4?
Choroid plexus in the fourth ventricle adds more CSF.
What happens at stage 5?
CSF flows out two lateral apertures and one medial aperture.
What happens at stage 6?
CSF fills subarachnoid space and bathes external surfaces of brain and spinal cord.
What happens at stage 7?
At arachnoid villi, CSF if reabsorbed into venous blood of dural venous sinuses.
What happens at stage 8?
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