1. Respiratory System

2. to get oxygen to your cells
Function:
to get oxygen to your cells

3. Main Organ:
lungs

4. We inhale oxygen and exhale carbon dioxide
breathe in
exhale -
breathe out

5. Oxygen - the gas in the air that is needed
to burn food energy to stay alive

6. the waste product given off
carbon dioxide -
the waste product given off
when exhaling

8. Process of the Respiratory System
1. Air enters into your body through your mouth and your nose.

9. 2. The air goes down your trachea to your lungs.

10. 3. As you breathe in, your chest gets bigger and your lungs fill with air

11. 4. Your trachea divides to form a system of tubes in your lungs
4. Your trachea divides to form a system of tubes in your lungs. These tubes look like the branches of a tree. The branches get smaller and smaller until they end in air sacs.

12. 5. All around the air sacs are tiny blood vessels called capillaries.

13. 6. The walls of the air sacs and the capillaries are very thin, therefore, oxygen passes easily through these wall. The air moves into the blood. Carbon dioxide moves the other way.

14. What path does oxygen take to reach the lungs?
QUIZ TIME
What path does oxygen take to reach the lungs?

15. It goes from the nose or mouth through the trachea to the lungs.
ANSWER
It goes from the nose or mouth through the trachea to the lungs.

16. What is the job of the respiratory system?

17. To carry blood (oxygen) to and from body cells.
ANSWER
To carry blood (oxygen) to and from body cells.