How the LCA and IA muscles adduct (close) the glottis
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This is the approved revision of this page, as well as being the most recent.
This very brief (1 minute) video shows a demonstration of the action of the lateral cricoarytenoids and interaryenoids in adducting the vocal folds and closing the posterior glottic gap, using an excised cow larynx. THere is a biref demonstration of both the posterior cricoarytenoid and the cricothyroid muscles.
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