Which of the following is NOT correct regarding CSF?
A) CSF is produced by the choroid plexus.
B) CSF is reabsorbed into the blood supply.
C) CSF functions to cushion the brain against abrupt movements of the brain within the skull.
D) The total volume of brain CSF is about 400 ml.
E) Loss of CSF would result in compression of brain material onto the ventral skull surface.
Answer: D
Rationale: The total volume of brain CSF is about 125 ml, not 400 ml.
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