Describe the physiology of cerebrospinal fluid (CSF) (60% of marks). Describe the anatomy relevant to performing a lumbar puncture (40% of marks).

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College Answer

Better answers had a structure with headings such as function, formation, circulation, absorption and composition with dot point facts under each heading. The second part of the question lent itself to a diagram with labelling which scored well. Precise surface anatomy and mentioning all layers from the skin to the sub-arachnoid space scored well.