How does the lungs know which is O2 and CO2? We breathe a ton of different gasses daily but what happens to the other gases other than O2 and CO2 when inhaled?

Question

How does the lungs know which is O2 and CO2? We breathe a ton of different gasses daily but what happens to the other gases other than O2 and CO2 when inhaled?

In: 729

Answer 1

You also have a shit ton of nitrogen dissolved in your blood. Doesn’t much matter until you go scuba diving, though.