| The instrument is introduced orally and advanced to the epiglottis, where it is rotated 90 degrees to pass the vocal cords and enter the trachea. |
| The extrinsic muscles of the larynx control the degree of tension on the vocal cords, and the intrinsic muscles regulate the glottis. |
| The vocal cords vibrate when air is expired through the glottis, creating sound waves in the column of air within the pharynx, nose, and mouth. |
| Voice is the sound produced by the inward movement of vocal cords when the air from lungs passes through and brings the vocal cords together. |
| The most accurate means of detecting MAS is by examining the vocal cords with a laryngoscope. |
| Irregular adduction can be superimposed on a fixed reduction of the glottic area caused by tonic adduction of the vocal cords. |
