====== Cervical spinal nerve 5 ====== The [[cervical spinal nerve]] 5 (C5) is a [[spinal nerve]] of the [[cervical]] segment. It originates from the spinal column from above the cervical vertebra 5 (C5). It contributes to the [[phrenic nerve]], [[long thoracic nerve]], and [[dorsal scapular nerve]] before joining cervical spinal nerve 6 to form the upper trunk, a trunk of the [[brachial plexus]], which then forms the lateral cord, and finally the [[musculocutaneous nerve]]. ===== C5 radiculopathy ===== see [[C5 radiculopathy]].