[Gk. larynx.] The upper part of the windpipe or trachea forming the organ of voice. It is situated between the windpipe and the base of the tongue, at the upper and front part of the neck, and opens above into the throat (q. v.), and below into the windpipe. The skeleton of the larynx is composed of five principal cartilages, and these are connected by ligaments known as vocal cords, the movements of the organ being regulated by two sets of muscles.