The<unk>  arises from the third, fourth, and fifth cervical spinal nerves (C3-C5) in humans. It arises from the fifth, sixth and seventh cervical spinal nerves (C5-7) in most domestic animals.
Phrenic nerve
Vagus nerve
Recurrent laryngeal nerve
Intercostal nerves
Sympathetic trunk
Cervical plexus
Bronchiole
Muscles of larynx