A needle used in a spinal tap must be inserted until its tip is in the
A)arachnoid mater.
B)epidural space.
C)subarachnoid space.
D)subdural space.
E)peridural space.

Question

Quizplus · Accepted Answer

The needle is inserted into the spinal canal until its tip is in the subarachnoid space, which contains the cerebrospinal fluid and surrounds the spinal cord and meninges. The arachnoid mater, subdural space, and epidural space are all located outside of the subarachnoid space and are not the intended location for a spinal tap.

A Needle Used in a Spinal Tap Must Be Inserted