where do the nerves that control the diaphragm exit the cns
Phrenic nerve The phrenic nerve originates mainly from the 4th cervical nerve, but also receives contributions from the 5th and 3rd cervical nerves (C3-C5) in humans.[1] Thus, the phrenic nerve receives innervation from parts of both the cervical plexus and the brachial plexus of nerves.