The two<unk> es condition the air to be received by the other areas of the respiratory tract. Owing to the large surface area provided by the<unk>  conchae (also known as turbinates), the air passing through the<unk>  is warmed or cooled to within 1 degree of body temperature. In addition, the air is humidified, and dust and other particulate matter is removed by<unk>  hair in the nostrils. The entire mucosa of the<unk>  is covered by a blanket of mucus, which lies superficial to the microscopic cilia and also filters inspired air. The cilia of the respiratory epithelium move the secreted mucus and particulate matter posteriorly towards the pharynx where it passes into the esophagus and is digested in the stomach. The<unk>  also houses the sense of smell and contributes greatly to taste sensation through its posterior communication with the mouth via the choanae.
Nasal cavity
Oropharyngeal airway
Hemotympanum
Nasopharyngeal airway
Lacrimal sac
Mouth
Craniopharyngeal canal
Orbital septum