Cricothyroid muscle

Cricothyroid muscle

The cricothyroid muscle attaches to the anterolateral aspect of the cricoid and the inferior cornu and lower lamina of the thyroid cartilage, tilting the thyroid forwards and tensing the vocal cords. It is the only laryngeal muscle supplied by the external branch of the superior laryngeal nerve (rather than the recurrent laryngeal nerve).


The Cricothyroid muscle produce tension and elongation of the vocal folds by drawing up the arch of the cricoid cartilage and tilting back the upper border of the thyroid cartilage lamina; the distance between the vocal processes and the angle of the thyroid is thus increased, and the folds are consequently elongated, resulting in higher pitch phonation.


This muscle is innervated by the external branch of the superior laryngeal nerve.

Additional images

See also

External links

Search another word or see cricothyroid muscleon Dictionary | Thesaurus |Spanish
Copyright © 2015, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature