Answers

2014-06-16T21:32:51+08:00
When you inhale, air goes in and our diaphragm contracts and flattens. When we exhale, air goes out and our diaphragm relaxes. In general, when we inhale or exhale, exchange of gases takes place
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final answer ?
All of the thing i said. The last sentence is only the generalization.
hmmp .. thank you!... ;))
hmmmp ..
2014-06-19T02:46:31+08:00
Breathing or Respiration takes place when you inhale and exhale.
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