The respiratory system helps you breath. It is a group of organs that help you breathe in O2- oxygen and carbon dioxide from your lungs.They work as a team but one organ dose its job but at the end it was a team efet to make one breath.
First you breath in air that air comes in your mouth or nose and down the trachea then throw your to your lungs Then into your bronchiole.
After the air goes into your blood sells but you don’t want carbon dioxide that is why you breath it out O2 helps us do activities.
Just think all that happens in just a breath so respect your respiratory system.