Our bodies need oxygen.

We breathe in Oxygen.

We breathe out carbon dioxide.

Oxygen enters our blood whenwe breathe in.

Carbon dioxide leaves our body whenwe breathe out.

The respiratory system is made up of:

NostrilsWindpipe

Bronchi

Lungs

The air enters the nostrils

and passesthrough thewindpipe.

The windpipe is divided in two tubescalled bronchi.

In the lungs…

Oxygenpassesinto theblood.

Carbondioxidepassesinto theair.

Eduardo López FernándezCeip El Recuerdo, San Javier.