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When you breath in ( inhale) the air enters the lungs through the Bronchi/Bronchus which divides up into smaller airways called BRONCHIOLES, the bronchioles send air into the inside walls of the lungs where the alveolia allow oxygen to be absorbed by the blood cells and oxygenate the blood transfer throughout the body

so basically the bronchiles send air into the inside walls of the lungs to allow the alveolia to absorb oxygen and transfer it throughout the body, the alveolus/alveolia is a air sac that holds the oxygen.

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14y ago

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