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Arytenoid cartilage

Recommended video: Larynx [30:35]
Cartilages, ligaments, membranes and muscles of the larynx.

The arytenoid cartilage is a paired, pyramidal shape hyaline cartilage of the larynx. The base of the arytenoid cartilage articulates cricoid cartilage, forming the cricoarytenoid joint. Each arytenoid cartilage has an apex, as well as vocal and muscular processes. The apex is the superior of the three processes and contains an articular facet for the corniculate cartilage and also servers as an attachment point for the aryepiglottic fold. The vocal process projects anteriorly and serves as an attachment point of the vocal ligament (vocal fold/true vocal cord). The muscular process is found laterally and serves as an attachment point for the transverse arytenoid, and the posterior and lateral cricoarytenoid muscles.

Attached to the anterolateral margin of the arytenoid cartilage is the quadrangular membrane, which extends to the lateral borders of the epiglottis. The free lower edge of the quadrangular membrane is thickened and is known as the vestibular ligament, which is enclosed by a fold of mucous membrane forming the vestibular fold (false vocal cord). The vestibular fold extends from the arytenoid cartilage to the thyroid cartilage.

Terminology English: Arytenoid cartilage
Latin: Cartilago arytenoidea
Definition Pyramidal shaped cartilage of the larynx 
Function Essential for vocalization as it forms the cricoarytenoid joint, is an attachment site for the vocal folds and the intrinsic laryngeal muscles which move the vocal folds.

Learn more about the cartilages of the larynx with this study unit (and article):

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