坐飞机为何会引起耳部不适呢?原来,耳与鼻咽之间有“咽鼓管”相连,它如同一个单向活瓣,平时闭合着。当我们做吞咽、咀嚼、打喷嚏等动作时,咽肌收缩,该管开放,外界空气方能进入中耳,使耳膜内外压力维持平衡。当飞机上升或下降时,由于大气压的改变,便出现耳内外压力不平衡状态。特别是飞机下降时,中耳压力突然低于外界气压,鼓膜向内移位,便出现耳鸣,耳痛和胀塞。严重的还可引起耳内损伤,伴有头晕、恶心、呕吐、面色苍白等症 Why did the plane cause ear discomfort? It turned out that between the ear and nasopharynx “Eustachian tube ” connected, it is like a one-way valve, usually closed with. When we do swallowing, chewing, sneezing and other actions, the pharyngeal muscle contraction, the tube open, the outside air can enter the middle ear, so that the pressure inside and outside the eardrums to maintain balance. When the plane goes up or down, due to changes in atmospheric pressure, there will be imbalance in the pressure inside and outside the ear. Especially when the aircraft descends, the pressure of the middle ear suddenly drops below the outside air pressure, and the tympanic membrane shifts inwardly to cause tinnitus, earache and bulging. Serious can also cause damage to the ear, accompanied by dizziness, nausea, vomiting, pale and embolism