Which of the following processes form CSF?

A. Extracellular fluid leakage
B. Blood filtration
C. Active transport of substances
D. A and C only
E. All of the above


ANS: E
Rationale: Extracellular fluid leaking into the ventricles produces some CSF. However, blood filtration and the active and facilitated transport of specific substances produce most CSF.

Health & Biomechanics

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