Answers

2015-07-19T10:17:41+05:30
First air or oxygen enters our body through nasal cavity then to pharynx then larynx (in between epiglottis comes). Then trachea, next comes bronchus region.
At last lungs.
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2015-07-19T15:21:36+05:30
The air passes from the nostrils to the nose .From there they pass to the wind pipe from there to the lungs. Where they fuse with surface of alveoli and get mixed up with the blood.
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