The Function of the Normal Larynx

Uses models and slow-motion cinematography to show the anatomy and action of the human larynx in the production of sounds of different pitch. Matches actual sounds with normal speed visuals and compares pitch and laryngeal action. Includes a sequence showing the equipment used in preparing this motion picture., Presents a brief review of anatomy of the larynx and a detailed picture of normal laryngeal physiology in voice production. Includes observations of a new concept of abduction, arytenoid motion and synchrony of vibration. Emphasizes the importance of the loose mucous membranes with slow motion pictures of the thick double lip of the vocal cords during phonation. Illustrates the complexity and diversity of laryngeal adjustments by views of a cough and a coup de glotte. NOTE: Two (or more) records have been merged together to create this data.