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Oblique Arytenoid Muscle
Muscular System

Oblique Arytenoid Muscle

Musculus arytenoideus obliquus

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Quick Facts

Origin: Muscular process of arytenoid cartilage.

Insertion: Apex of contralateral arytenoid cartilage and aryepiglottic fold.

Action: Adducts vocal folds.

Innervation: Recurrent laryngeal nerve (CN X).

Arterial Supply: Superior and inferior thyroid arteries.

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The fibers of the oblique arytenoid muscle arise from the muscular process of the arytenoid cartilage.


The fibers of the oblique arytenoid muscle cross over to the contralateral arytenoid cartilage and insert into its apex. A portion of the fibers extend laterally past the apex of the arytenoid cartilage into the aryepiglottic fold. These fibers form the aryepiglottic part of the oblique arytenoid muscle.

Key Features & Anatomical Relations

The oblique arytenoid muscle lies superficial to the transverse arytenoid muscle. The oblique arytenoid adducts the vocal fold and the aryepiglottic part brings the epiglottis towards the arytenoid cartilages.


Overall, the oblique arytenoid muscle adducts the vocal folds and closes the laryngeal inlet. 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.

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