Major Functions 

Part 1 of The Gas Exchange

You take in air through your mouth and nose and then that oxygen goes through your lungs and bronchi tree into the circular system where it then spreads it to the other parts of the body. 

Part 2 of The Gas Exchange

When you breathe in you also take in carbon dioxide. In the alveoli, oxygen and carbon dioxide are attracted to each other swapping places where the carbon dioxide is then let out. 

   Speach and Song

When air passes through the larynx, your muscles contract causing vibrations and that creates your voice.

Swallowing

When you swallow a nerve into the back of your throat it will send a message to your trachea and that allows you to stop breathing so the food can pass through your esophagus correctly.