– If humans breathe in oxygen and exhale CO2, then why does mouth-to-mouth resuscitation work?

Question

– If humans breathe in oxygen and exhale CO2, then why does mouth-to-mouth resuscitation work?

In: 172

Answer 1

Adding to this: this is also how and why an rebreather works: you inhale one last time and exhale into a bag/container. After that you use that air mixture to breathe, giving you some crucial extra breathing time in case of submersion (a.i. helicopter crash)