If air is made up of 78% Nitrogen, our blood uses Oxygen and we exhale Carbon dioxide, what happens to nitrogen?

Question

If air is made up of 78% Nitrogen, our blood uses Oxygen and we exhale Carbon dioxide, what happens to nitrogen?

In: Biology

Answer 1

We exhale oxygen and nitrogen too 🙂 in fact, nitrogen also dissolves in blood, which is why you can get the bends when diving.