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. (Their action is antagonistic to that of the
posterior cricoarytenoid muscles.) The lateral cricoarytenoid muscles receive innervation from the recurrent laryngeal branch of the
vagus nerve (CN X).
Additional images
See also
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cricoid cartilage
★
arytenoid cartilage
External links
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