The Respiratory System and Gaseous Exchange

Front

What does the respiratory system do?

Back

The respiratory system transports oxygen from the air we breathe into our lungs and diffuses it into the bloodstream, while carbon dioxide makes the opposite journey.

Front

How does air enter the body?

Back

Air enters the body through the mouth and nose, then travels through the trachea, which divides into two bronchi, one for each lung.

Front

What are bronchioles?

Back

Bronchioles are smaller tubes that branch out from the bronchi and carry air to the alveoli.

Front

Where does gaseous exchange occur?

Back

Gaseous exchange occurs at the alveoli in the lungs.