title: Normal tubal function.
mesh_terms: D003679:Deglutition; D004432:Ear, Middle / Q000502:physiology; D005064:Eustachian Tube / Q000502:physiology*; D006801:Humans; D009305:Nasopharynx / Q000502:physiology; D011312:Pressure; D014636:Valsalva Maneuver