L5-S1 nerves Spine-Health: Spinal Cord and Spinal Nerve Roots Spinal Overview Spine Health human spine Spine-health Spinal Cord and Spinal Nerve Roots spinal cord spinal column spinal nerve roots spinal nerve roots‡ 31 major nerves Spine Health spinal nerves or the spinal cord spinal nerves and roots through the thoracic spine nerve roots spinal nerve roots nerve roots