Skip to main content

Unfortunately we don't fully support your browser. If you have the option to, please upgrade to a newer version or use Mozilla Firefox, Microsoft Edge, Google Chrome, or Safari 14 or newer. If you are unable to, and need support, please send us your feedback.

Publish with us
Lateral Cricoarytenoid Muscle
Muscular System

Lateral Cricoarytenoid Muscle

Musculus cricoarytendoideus lateralis

Read more

Quick Facts

Origin: Superior margin of cricoid arch.

Insertion: Muscular process of arytenoid cartilage.

Action: Adducts vocal folds.

Innervation: Recurrent laryngeal nerve (CN X).

Arterial Supply: Superior and inferior thyroid arteries.

Complete Anatomy
The world's most advanced 3D anatomy platform
Try it for Free


The lateral cricoarytenoid muscle attaches to the superior margin of cricoid arch.


The fibers of the lateral cricoarytenoid muscle run posteriorly in an oblique direction and insert into muscular process of the arytenoid cartilage.


The lateral cricoarytenoid muscle rotates the arytenoid cartilage medially, which adducts the vocal folds. Adduction of the vocal folds causes shortening and relaxation of the vocal folds (Standring, 2016).


Standring, S. (2016) Gray's Anatomy: The Anatomical Basis of Clinical Practice. Gray's Anatomy Series 41st edn.: Elsevier Limited.

Learn more about this topic from other Elsevier products

Lateral Cricoarytenoid Muscle

ScienceDirect image

The lateral cricoarytenoid muscle joins the superior border of the lateral cricoid cartilage and the muscular process of the arytenoid.

Explore on ScienceDirect(opens in new tab/window)

Complete Anatomy

The world's most advanced 3D anatomy platform

Complete Anatomy