internal respiration; cellular respiration
Biological term for the exchange of gases within cells or tissues, as opposed to external respiration (外呼吸) which involves breathing and lung gas exchange.
See also: 外呼吸
Internal respiration refers to oxygen consumption and carbon dioxide production at the cellular level.
In biology class, we learned the difference between internal and external respiration.
Compound of 内 (internal) and 呼吸 (respiration). A straightforward technical term formed from Sino-Japanese roots.