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respiratory system
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how does oxygen enter your body
Oh hi guys my name is Ava and today i'll be showing you how oxygen enters your body
The oxygen molecule first enters your body through your nose
After the oxygen enters your nose the air travels to your trachea.
After this happens the air then enters your bronchi after this your bronchi then carries the air to your lungs
while the air is your lungs it goes to these air sacs called alveoli
this is where the exchange of oxygen and carbon dioxide happens
now after the exchange of oxygen and carbon dioxide the carbon dioxide is then exhale
and the oxygen that was picked up now returns to the heart
https://www.youtube.com/watch?v=UTR1IsX55dc&t=63s
these are my referenceshttps://www.youtube.com/watch?v=mOKmjYwfDGU
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