ScienceCâu 62 / 120
During inhalation, the diaphragm contracts and moves in which direction?
a.Upward
b.Sideways
c.It does not move
d.Downward
Giải thích
When the diaphragm contracts, it flattens and moves downward, increasing the volume of the chest cavity and drawing air into the lungs. During exhalation it relaxes and moves upward.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
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