The Upper Airway

The upper airway is one of the essentials for healthy respiration. Anatomically, it can be evaluated in three sections; nasopharynx, oropharynx and laryngopharynx. These structures are affected by several factors such as growth and development, gender variability and body-mass index. In this chapter; normal dimensions of the upper airway, methods for its evaluation along with factors affecting its anatomy, volume and minimal correctional area will be discussed.