Respiratory system

1. The respiratory system.

2. The respiratory sytem is a group of organs that work
together to help us breathe.

3. Air enters our lungs through the nose,
mouth,pharynx, trachea, and bronchi.

4. We breathe in air through our nose and
mouth.

5. The air goes down through the pharynx
and the trachea.

6. Oxygen passes through the alveoli
to the lungs.

7. The diaphragm is a muscle below the
lungs that moves when we breathe.

8. Oxygen passes
to the blood in
the circulatory
system where
it moves
around our
body.

9. We breathe in
oxygen.
Then we breathe
out carbon dioxide.

10. Let’s label!