as I was told from early education that the air we currently breathe in contains 21% oxygen and 77-ish% of nitrogen and the rest are other particles.
So I have a dumb question on what the body uses nitrogen we breathe in for?
In: 387
Nothing. None of the nitrogen from the air actually enters your body . You breathe in and the air enters your lungs (the space in your lungs is still external to your body). Oxygen from the air goes into your blood, carbon dioxide from the blood leaves into your lungs, and then you breathe out. The nitrogen doesn’t do anything. It just…doesn’t get absorbed, and then leaves again.
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