PCA

How the LCA and IA muscles adduct (close) the glottis (Article)
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. (posted 2:34 PM, August 27, 2014)

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