Straining

Japanese: いきみ
Straining

…There are many occasions in daily life when abdominal pressure is required, such as urination and defecation. For the reasons mentioned above, it is obvious that when exerting abdominal pressure, such as by straining, one should inhale. The diaphragm has three holes through which the esophagus, descending aorta, and inferior vena cava pass, leading from the thoracic cavity to the abdominal cavity. …

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…排尿・排便など日常生活で腹圧を必要とする機会は多い。いわゆる〈いきみ〉など腹圧を加えるときには,息を吸いこんだ状態で行うのは,上述の理由から明らかであろう。横隔膜には,胸腔から腹腔へ通ずる食道,下行大動脈,下大静脈などが貫くための三つの穴がある。…

※「いきみ」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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