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The posterior surface is triangular, smooth, concave, and gives attachment to the arytenoid muscle and transversus.. The antero-lateral surface is somewhat convex and rough. On it, near the apex of the cartilage, is a rounded elevation (colliculus) from which a ridge (crista arcuata) curves at first backward and then downward and forward to the vocal process.
In the human larynx, the cuneiform cartilages (from Latin: cuneus 'wedge' + forma 'form'; also known as cartilages of Wrisberg) are two small, elongated pieces of yellow elastic cartilage, placed one on either side, in the aryepiglottic fold. [1] The cuneiforms are paired cartilages that sit on top of and move with the arytenoids. [2]
1 Anatomy. 2 References. ... Printable version; In other projects ... and the apex and fovea triangularis of the ipsilateral arytenoid cartilage. It has free superior ...
During an arytenoidectomy, the surgeon removes the arytenoid cartilage. The arytenoid cartilages are a pair of pyramid-shaped structures in the larynx (voice box) that play an essential role in vocal sound production. Various techniques, such as laser surgery or conventional surgical instruments, may be employed based on the severity of the ...
The muscle additionally draws the arytenoid cartilages posterior-ward, thus (assisting in) lengthening the vocal cords (here acting as synergist of the cricothyroid muscle). The lateral-most portion of the muscle also draws the arytenoid cartilages lateral-ward, making the rima glottidis into a triangular shape. [1]
Its main use is to draw the arytenoid cartilages forward toward the thyroid, thus relaxing and shortening the vocal folds. But, owing to the connection of the deeper portion with the vocal fold, this part, if acting separately, is supposed to modify its elasticity and tension, while the lateral portion rotates the arytenoid cartilage inward ...
Print/export Download as PDF; Printable version; In other projects ... cartilage to the medial surface of the base and muscular process of the arytenoid cartilage
Muscular process of the arytenoid cartilage: Nerve: Recurrent laryngeal branch of the vagus: Actions: Adduct and medially rotate the cartilage, pulling the vocal ligaments towards the midline and backwards and so closing off the rima glottidis: Antagonist: Posterior cricoarytenoid muscle: Identifiers; Latin: musculus cricoarytaenoideus ...