This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
CSF pressure depends primarily upon? 
Select and explain. 
A. Rate of formation from choroid plexus, B. Rate of absorption, C. Cerebral blood flow, D. Blood pressure
B: Rate of absorption
Answer: B: Rate of absorption 
Explanation: Ans. B. Rate of absorptionCSF pressure depends primarily upon Rate of absorption because the rate of the formation is fairly constant.