Quick Facts
Origin: Vocal ligament.
Insertion: Vocal process of arytenoid cartilage.
Action: Shortens and adducts vocal ligament, widens laryngeal inlet.
Innervation: Recurrent laryngeal nerve (CN X).
Arterial Supply: Superior and inferior thyroid arteries.
Related parts of the anatomy
Origin
The fibers of the vocalis muscle run parallel with the vocal ligament. The vocalis is considered to be part of the thyroarytenoid muscle, where its fibers originate at the angle between the laminae of the thyroid cartilage.
Insertion
The fibers insert into the vocal process of the arytenoid cartilage.
Key Features & Anatomical Relations
The vocalis muscle, along with the vocal ligament and the overlying mucosa, forms the vocal fold or the true vocal cord. The vocalis muscle produces fine adjustments to the vocal ligaments during speech and song (Moore, Dalley and Agur, 2013).
References
Moore, K. L., Dalley, A. F. and Agur, A. M. R. (2009) Clinically Oriented Anatomy. Lippincott Williams & Wilkins.
