The Thyreoarytænoideus (Thyroarytenoid) is a broad, thin, muscle which lies parallel with and lateral to the vocal fold, and supports the wall of the ventricle and its appendix.

It arises in front from the lower half of the angle of the thyroid cartilage, and from the middle cricothyroid ligament.

Its fibers pass backward and lateralward, to be inserted into the base and anterior surface of the arytenoid cartilage.

The lower and deeper fibers of the muscle can be differentiated as a triangular band which is inserted into the vocal process of the arytenoid cartilage, and into the adjacent portion of its anterior surface; it is termed the Vocalis, and lies parallel with the vocal ligament, to which it is adherent.

External links

Muscles of the head and neck