The Adam's apple, in conjunction with the thyroid cartilage which forms it, helps to protect the walls and the frontal part of the larynx, including the vocal cords (which are located directly behind it). It is found in both women and men.
Another function of the laryngeal prominence is related to the deepening of the voice. During adolescence, the thyroid cartilage grows together with the larynx. Consequently, the laryngeal prominence grows in size mainly in men. Together, a larger soundboard is made up in phonation apparatus and, as a result, the man gets a deeper voice note