Breathing is an important feature of animal life activities. The whole process can be divided into four consecutive links: lung ventilation, lung ventilation, gas transportation and（）.

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正确答案：tissue ventilation

Tag：动物解剖生理时间：2021-12-25 22:23:27

上一篇：（） is located in the middle of the thorax and divides the thorax and pleura into two parts.
下一篇：Tissue ventilation is also called internal respiration. Lung ventilation and tissue ventilation are collectively referred to as（）.