A physician must administer an anesthesia directly to the CNS via the vertebral column. How many layers of the meninges must be punctured to do so?
A. Three to introduce the anesthesia directly to the spinal cord
B. None to introduce the anesthesia to the epidural space
C. Two layers to introduce the anesthesia to the subarachnoid space
D. One layer to introduce the anesthesia to the subarachnoid space
Answer: C
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Fill in the blank(s) with the appropriate word(s).
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