Spinalnervarna
Spinalnervarna, also known as spinal nerves, are a crucial part of the peripheral nervous system in vertebrates. They connect the spinal cord to the rest of the body, serving as conduits for both sensory and motor information. There are typically 31 pairs of spinal nerves in humans, named and numbered according to their point of origin in the spinal cord. These nerves are categorized by their vertebral region: 8 cervical nerves, 12 thoracic nerves, 5 lumbar nerves, 5 sacral nerves, and 1 coccygeal nerve.
Each spinal nerve is formed by the union of a dorsal root and a ventral root. The