why 7 cervical vertebrae and 8 cervical nerves
Spinal nerve The cervical nerves are the spinal nerves from the cervical vertebrae in the cervical segment of the spinal cord. Although there are seven cervical vertebrae (C1-C7), there are eight cervical nerves C1â€“C8. All cervical nerves except C8 emerge above their corresponding vertebrae, while the C8 nerve emerges below the C7 vertebra. Elsewhere in the spine, the nerve emerges below the vertebra with the same name.
Neck pain Neck pain (or cervicalgia) is a common problem, with two-thirds of the population having neck pain at some point in their lives.[1]
Alonso Álvarez de Pineda
Marcus Álvarez