Final answer:
Spinal nerves exit through the intervertebral foramina at their respective levels in the vertebral column.
Step-by-step explanation:
The spinal nerves exit through the intervertebral foramina at their respective levels in the vertebral column. There are 5 pairs of sacral nerves that emerge from the sacral foramina in the lower back, 5 pairs of lumbar nerves that emerge between the corresponding lumbar vertebrae, and 12 pairs of thoracic nerves that emerge between the corresponding thoracic vertebrae.