Final answer:
The sympathetic paravertebral chain extends from the cervical to the sacral regions of the vertebral column.
Step-by-step explanation:
The sympathetic paravertebral chain extends from cervical to sacral regions. This chain of ganglia runs alongside the vertebral column and is responsible for the sympathetic innervation to the organ systems of the body. Consisting typically of 23 ganglia, three are in the cervical region, 12 thoracic, four lumbar, and four sacral. While the cervical and sacral ganglia are connected to the spinal cord not through direct spinal roots, they are integrated through the ascending and descending axonal bridges within the chain.