Answers

2014-06-15T14:19:30+08:00
Nose , nasal cavity, trachea, bronchi, bronchioles, air sacs
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2014-06-15T14:23:11+08:00
The pathway of the breathing system are:
nose
nasal cavity
trachea
bronchi
bronchioles
and the last isĀ 
alveoli
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