Briefly outline the formation, absorption, distribution, role and composition of cerebrospinal fluid.
The question spelt out very specific areas of CSF physiology to outline and the marks were evenly distributed among these areas. The candidates who did not pass this question usually did not provide enough detailed information.
Details of the production and absorption of CSF were commonly lacking. The majority of candidates correctly described the composition of CSF; indicating whether a particular variable was higher or lower than in plasma, scored less marks than more specific information.
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Brown, P. D., et al. "Molecular mechanisms of cerebrospinal fluid production." Neuroscience 129.4 (2004): 955-968.