Ciliary movement and acetylcholine.
D000109:Acetylcholine / Q000494:pharmacology*; D004947:Esophagus / Q000502:physiology*; D009068:Movement; D014132:Trachea / Q000502:physiology*
D000109:Acetylcholine
ACETYLCHOLINE/effects; ESOPHAGUS/physiology; TRACHEA/physiology