User:Claudio scsd/sandbox

 Possible Sections to Fix As Mentioned in the Talk Page: 


 * Touch up the introduction section and add more information (prevalence and incidence rate)
 * Add more to the causes of laryngitis (reference sources)

 Sections to Add: 


 * An anatomy section explaining the role and function of the larynx
 * Medical tests used to assess/diagnose laryngitis
 * Surgery as a potential treatment

Functions of the Larynx
The larynx plays an important role in respiration, swallowing and speech. The larynx is one of the respiratory areas in which air circulates before exiting through the oral cavity or nasal cavities. During swallowing, the larynx ensures the protection of the airway by preventing foreign substances such as objects or liquids from entering. This can be accomplished by the closing of the epiglottis which blocks the entrance to the trachea. The vocal folds, which are essential for the production of speech, are located in the larynx. When speaking, the vocal folds open and close quickly which allows air to escape from the lungs and vibrate throughout the vocal tract. In individuals with laryngitis, the vocal folds are inflamed causing a change in voice quality.