How does our nose and mouth breathe?

Question

I understand that when we breathe the air goes to our lungs and then send the waste air out (very simplified). But how does our nose and mouth move to breathe, and how do they make air go into them and push out of them?

In: 0

Answer 1

A mussel underneath the lungs moves up and down creating a vacuum causing air to rush in. For breathing out it is the opposite, the mussel causes less space in your lungs forcing the air out