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The larynx, also called the voice box, has a number of functions. Its main function is a conduit for air to enter your lungs. Also, the larynx works to prevent food, liquids and saliva from falling into your lungs and causing pneumonia. Finally, the larynx is responsible for creating voice. The larynx is part of the throat. It is located below the oropharynx and in front of the hypopharynx.
From a cancer perspective, the larynx is divided into three subsites: the supraglottis, glottis and subglottis. Cancer of the larynx starts in one of these subsites, but it can grow into another subsite.
A laryngectomy is the removal of some or all of the voice box—partial versus total laryngectomy.