The role of the Eustachius tube and the tympanal muscles in yawning.
D004432:Ear, Middle; D005064:Eustachian Tube / Q000502:physiology*; D006801:Humans; D012018:Reflex; D014432:Tympanic Membrane; D015000:Yawning
EUSTACHIAN TUBE/physiology; REFLEX