Respiratory tract secretions

Japanese: 気道分泌液 - きどうぶんぴつえき
Respiratory tract secretions

...The main components of airway secretions are secretions from the mucous membranes of the trachea and bronchi, but they are also mixed with exudates containing various cells caused by inflammation and congestion, foreign bodies such as bacteria and dust that have invaded from the outside, and saliva that is added when exhaling. In healthy people, about 100 ml of airway secretions are produced per day, and these are constantly sent toward the oral cavity along with foreign bodies such as bacteria and dust by the ciliary movement of the ciliated epithelial cells of the airway mucosa, and are unconsciously swallowed by the esophagus. The transport speed is said to be 2 to 3 cm/min in the trachea and 0.25 to 1 cm/min in the bronchi, and becomes slower as you go to the peripheral bronchi. ...

*Some of the terminology that refers to "airway secretions" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…そのおもな成分は気管や気管支の粘膜からの分泌液であるが,これに炎症や鬱血(うつけつ)などによる種々の細胞を含んだ滲出液や,外部から侵入した細菌や塵埃(じんあい)などの異物と吐き出す際に加わる唾液が混じっている。 健康人では1日に約100mlの気道分泌液がつくり出されており,これらは気道粘膜の繊毛上皮細胞の繊毛運動によって,細菌やほこりなどの異物とともにたえず口腔に向かって送り出され,無意識のうちに食道に飲み込まれている。その輸送速度は,気管では2~3cm/min,気管支では0.25~1cm/minといわれており,末梢の気管支へいくほど遅くなっている。…

※「気道分泌液」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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