Eustachian tube - Eustachian tube
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The Eustachian tube is an organ in the middle ear of higher vertebrates . It is an empty passageway that opens from the tympanic cavity to the oral cavity or pharynx, and equalizes the air pressure inside the tympanic cavity with the air pressure outside, facilitating the vibration of the tympanic membrane. Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information |
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〘名〙 (Eustachian tube の訳語) 高等脊椎(せきつい)動物の中耳にある器官。鼓室から口腔または咽頭に開口する空道で、鼓室内の気圧と外気圧とを等しくし、鼓膜の振動を容易にする。欧氏管。耳管(じかん)。
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