The superior laryngeal nerve is a branch of the vagus nerve (CN X) which supplies the larynx.
- origin: arises from the inferior ganglion of the vagus nerve (CN X)
- descends within the carotid sheath posterior and then medial to the internal carotid artery
- pierces the medial wall of the carotid sheath to continue descending along the lateral margin of the pharynx
- at the level of the greater cornu of the hyoid bone, it divides into 2 terminal branches
- branches and supply