The unprotected airway.
D000328:Adult; D000402:Airway Obstruction / Q000503:physiopathology / Q000628:therapy; D000403:Airway Resistance; D000768:Anesthesia, General; D001980:Bronchi / Q000502:physiology; D002923:Cilia / Q000502:physiology; D003371:Cough / Q000503:physiopathology; D003679:Deglutition; D005260:Female; D005683:Gagging; D005931:Glottis / Q000502:physiology; D006801:Humans; D007442:Intubation, Intratracheal; D007830:Larynx / Q000502:physiology; D008297:Male; D008875:Middle Aged; D009305:Nasopharynx / Q000502:physiology; D009666:Nose / Q000502:physiology; D010614:Pharynx / Q000502:physiology; D012018:Reflex; D012119:Respiration; D012137:Respiratory System; D014132:Trachea / Q000502:physiology; D014140:Tracheotomy