A lumbar puncture withdraws fluid from which space?
ASubclavian
BSubmucosal
CSubarachnoid
DSubcutaneous
Answer & Solution
Correct answer: C. Subarachnoid
1. The needle passes dura and arachnoid.
2. It stops where CSF circulates.
3. A needle inserted through the dura mater and arachnoid membrane into the subarachnoid space can withdraw the fluid.
4. So the answer is subarachnoid.
_Source: OpenStax 'Anatomy and Physiology 2e', Ch 13 'Anatomy of the Nervous System'_
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