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 (lar-inks), commonly called the voice box, is a tube shaped structure comprised of a complex system of muscle, cartilage, and connective tissue.oice production begins with respiration (breathing). Air is inhaled as the diaphragm (the large, horizontal muscle below the lungs) lowers. The volume of the lungs expands and air rushes in to fill this space. We exhale as the muscles of the rib cage lower and the diaphragm raises, essentially squeezing the air out.