The Eustachian tube and its significance in flight.
D000328:Adult; D000337:Aerospace Medicine; D001274:Atmospheric Pressure; D001469:Barotrauma / Q000503:physiopathology; D004423:Ear / Q000293:injuries; D005064:Eustachian Tube / Q000033:anatomy & histology / Q000502:physiology* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009305:Nasopharynx / Q000502:physiology; D010046:Oval Window, Ear / Q000293:injuries; D010156:Palatal Muscles / Q000502:physiology; D010609:Pharyngeal Muscles / Q000502:physiology; D012405:Round Window, Ear / Q000293:injuries; D014432:Tympanic Membrane / Q000293:injuries