有關於肺部的...
回答 (2)
2006-11-14 2:24 am
✔ 最佳答案
首先，肋間肌(肋骨間的肌肉)收縮，肋骨籃上升，橫隔膜(肺與腹腔之間的肌肉)扯平，胸腔體積增大，使肺內氣壓低於外界的氣壓，空氣由外界進入肺部。
2006-11-14 1:26 am
Muscles between rib cage contract and diaphragm muscles relax, rib cage increase in volume. Air rushes in due to reduction in pressure in the lungs.
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https://hk.answers.yahoo.com/question/index?qid=20061113000051KK01526