The larynx which is also called voice box is the organ that connects the lower part of the pharynx with the trachea. It serves (1) as a valve to guard the air passages, especially during swallowing, (2) for the maintenance of a patent airway, and (3) for vocalization. It is external skeleton of cartilage plates that prevents collapse of the structure. The front set of plates is called thyroid cartilage, which is also known as “adams apple” these plates tend to be replacing by bone cells beginning of age 20 onward. Next is the epiglottis which is the upper part if the larynx when the