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) Two layers to introduce the anesthesia to the subarachnoid space
B) None to introduce the anesthesia to the epidural space
C) One layer to introduce the anesthesia to the subarachnoid space
D) Three to introduce the anesthesia directly to the spinal cord

Question

Quizplus · Accepted Answer

To administer anesthesia directly to the CNS via the vertebral column into the subarachnoid space, the needle must puncture two layers of the meninges: the dura mater and the arachnoid mater. The third layer, the pia mater, closely adheres to the surface of the brain and spinal cord and is not punctured in this procedure.

A Physician Must Administer an Anesthesia Directly to the CNS