BRAIN
SPINAL CORD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When performing a lumbar puncture (spinal lap), the following structures are pierced by the needle EXCEPT:
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Posterior longitudinal ligament
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Supraspinous ligament
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Arachnoid mater
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Ligamentum flavum
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Dura mater
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Explanation:
Detailed explanation-1: -Posterior longitudinal ligament is not pierced during a lumbar puncture.
Detailed explanation-2: -Note that the pia mater is not pierced during a lumbar puncture.
Detailed explanation-3: -The spinal needle can be safely inserted into the subarachnoid space at the L3-4 or L4-5 interspace, since this is well below the termination of the spinal cord in most patients.
There is 1 question to complete.