The muscles that produce phonation can also adduct the glottis and the false cords to provide an impenetrable barrier to foreign material.

Name: The muscles that produce phonation can also adduct the glottis and the false cords to provide an impenetrable barrier to foreign material.
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The muscles involved in phonation, such as the thyroarytenoid muscle, can also adduct the true vocal cords and the false vocal cords to close off the airway and protect against foreign material entering the lungs.

The Muscles That Produce Phonation Can Also Adduct the Glottis