The Lateral Cricoarytenoid

The Lateral Cricoarytenoid - The Lateral Cricoarytenoid The...

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The Lateral Cricoarytenoid The lateral cricoarytenoid muscles extend from the lateral cricoid cartilage to the ipsilateral arytenoid cartilage. By rotating the arytenoid cartilages medially, these muscles adduct the vocal cords and thereby close the rima glottidis, protecting the airway. Origin: Lateral arch of the Cricoid Insertion: Muscular process of the Arytenoid Innervation: Recurrent branch of the Vagus (CN X) Action: Adduct and medially rotate the cartilage to close the rima glottidis The Transverse Arytenoid The transverse arytenoid crosses transversely between the two arytenoid cartilages. Origin: Lateral boarder of the posterior of the arytenoid Insertion: Lateral boarder of the posterior of the arytenoid Innervation: Recurrent branch of the Vagus Nerve (CN X) Action: Adduction of the arytenoid cartilages closing off the rima glottidis The Oblique Arytenoid The oblique arytenoid, the more superficial Arytenoid muscle, forms two fasciculi, which
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The Lateral Cricoarytenoid - The Lateral Cricoarytenoid The...

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