What’s wrong with the account of calm breathing?


What’s wrong with the account of calm breathing?

A.The external intercostal muscles contract during inhalation

B.the internal intercostal muscles contract during exhalation

C.the thorax returns naturally during exhalation

D.inhalation is an active process

正确答案:the internal intercostal muscles contract during exhalation


Tag:动物解剖生理 时间:2021-12-25 22:22:50