meatus acusticus externus

Japanese: meatus acusticus externus(英語表記)meatusacusticusexternus
meatus acusticus externus

…There are six auricular muscles attached to the ear, but in humans, the ear cannot normally be moved. The external auditory canal meatus acusticus externus is a tube with a long diameter of about 0.9 cm and a length of about 2.5 cm, and the eardrum is located at the back. Normally, it is not straight but curved in an S-shape, but if the auricle is pulled backwards, the external auditory canal becomes straight. …

*Some of the terminology that mentions "meatus acusticus externus" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…耳介には六つの耳介筋がついているが,ヒトでは,ふつうは耳を動かすことができない。外耳道meatus acusticus externusは長径約0.9cm,長さ約2.5cmの筒状をなしており,奥に鼓膜が存在する。通常は直線でなくS状にまがっているが,耳介を後方へ引っ張ると外耳道がまっすぐとなる。…

※「meatus acusticus externus」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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