Vagus nerve

Wanders the entire land so this is more of a hub note

course and landmarks

  • Exits skull at jugular foramen
  • Runs in carotid sheath between common carotid and IJV
  • Runs anterior to subclavian artery in the root of the neck
  • Runs posterior to lung root
  • Exits diaphragm at T10

important supply

important branches

classic clinical sign of injury

  • uvula deviating away from site of lesion
  • loss of gag reflex (efferent) (see Cranial nerve reflexes)
  • loss of jaw jerk reflex