What takes place when you inhale and exhale?

wait i'm not genious in biology or in chemistry maybe this is my real answer :)
When you breathe, the air enters the body through the nose or the mouth. It then travels down the throat through the larynx (voice box) and trachea (windpipe) and goes into the lungs through tubes called main-stem bronchi.
One main-stem bronchus leads to the right lung and one to the left lung. In the lungs, the main-stem bronchi divide into smaller bronchi and then into even smaller tubes called bronchioles. Bronchioles end in tiny air sacs called alveoli.
that is the real -_-
sorry naman nagkamali lang -_-


Our teacher told us something
I- Inhale
C- Contracts
E- Exhale
R- Relaxes
So when we inhale our lungs contacts, and when we exhale our lungs relaxes so the air takes place. when we inhale we receive oxygen and when we exhale we push out the carbon dioxide so the air takes place
Gas exchange when we inhale and exhale