Compléter Larynx Version en ligne Function of the larynx par Keviyana Jones 1 expand voice pitch trachea production vibrate volume phonation expelled folds sound speech neck bronchi The larynx commonly is called the box . It is located in the top of the . The larynx plays an essential role in human . Some of the functions of the larynx are producing , breathing , and protecting the against food aspiration . Other functions are housing the vocal , and manipulating and . This function is essential for . The the larynx functions is as air passes through your larynx , tissues to produce sound waves . The vibration of the tissue causes the volume within the lungs to , and air swoops in the nose or mouth , down through the larynx , and into the trachea , and , finally , lungs . During sound , the vocal cords close together and vibrate as air from the lungs passes between them .