Question

In the adult, spinal cord ends? Dural sac?

a) At the level of L2; S2
b) At the level of S1; S4
c) At the level of L5; S3
d) At the level of T12; S5

Answer 1

The correct answer is b) At the level of S1; S4. In an adult, the spinal cord ends at the level of L2 and the dural sac extends to around S2.

Step-by-step explanation:

The adult spinal cord ends at the level of the first sacral vertebra (S1) and the dural sac extends even further to the level of the fourth sacral vertebra (S4).

The spinal cord is divided into regions that correspond to the regions of the vertebral column. The sacral region is located at the base of the vertebral column and includes the spinal cord at the level of the upper lumbar vertebral bones. So, the adult spinal cord ends at the level of L2 and the dural sac extends further to the level of S4.