Match each division of the autonomic nervous system with its function.
a.sympathetic division
b.parasympathetic division
-To perform a lumbar puncture, physicians insert a hollow needle into the subarachnoid space between the third and fourth lumbar vertebrae and remove a sample of cerebrospinal fluid. Why do you think they choose this location for the procedure?
A) Because the vertebrae are more flexible in this location and the patient can bend forward
B) Because the spinal cord ends at the first lumbar vertebra, minimizing the risk for damaging the spinal cord
C) Because the cauda equina is in this area
D) Because there are no spinal nerves in this area, minimizing the risk for nerve injury

Question

Quizplus · Accepted Answer

The spinal cord ends at the first lumbar vertebra, so choosing the location of the third and fourth lumbar vertebrae minimizes the risk for damaging the spinal cord. The cauda equina, a bundle of nerve roots that continues below the spinal cord, is also located in this area. However, this is not the primary reason for choosing this location for a lumbar puncture.

Match Each Division of the Autonomic Nervous System with Its