Hair Tonic: What It Is And How To Use It. Hair tonic is an âold schoolâ hair styling product. It makes the hair look glossier (though some say greasier), something which many people viewed as a sign of healthy hair. The oils in the hair tonic also help hold the hair in place, making it easier to style, much like mousse or hair spray.
Larynx. the complex of cartilages, muscles, and ligaments that form the initial section of the trachea in terrestrial vertebrates and man, usually containing the vocal apparatus. The laryngeal cavity is divided into the anterior larynx, or vestibule, and the posterior larynx.
The larynx (voice box) is located at the top of the trachea (windpipe). The larynx contains the vocal cords. Vocal cords vibrate and allow us talk and sing. The opening to the larynx is covered by a large muscular flap called the epiglottis. The epiglottis covers the windpipe when we swallow, to prevent food from entering the trachea. The muscles of the larynx also help close the opening to the airway.