1. Objective September 20, 2011 In our study of the
respiratory system (R)
the students will be able to
identify (comprehension) functions and parts of the respiratory system
and show what they learned by
note-taking and drawing (evaluation) illustrations in their journal.

2. What do the words inhale and exhale describe when you breath?
Warm-Up
What do the words inhale and exhale describe when you breath?

3. The Respiratory System

4. The system of the body that deals with breathing
The body takes in the oxygen that it needs and removes the carbon dioxide that it doesn’t

5. The Oxygen Delivery System
Main function - to supply the blood with oxygen
Does this through breathing

6. Breathing and Respiration are NOT the same thing!

7. Moving air in and out of the lungs
Breathing
Moving air in and out of the lungs

8. Inhalation Breathing in Body gets oxygen from the air
Rib muscles contract to pull ribs up and out
Diaphragm muscle contracts to pull down the lungs
Tissue expands to force (pull) in air.

9. Exhalation Breathing out Get rid of carbon dioxide Rib muscles relax
Diaphragm muscle relaxes
Tissue returns to resting position and forces (pushes) air out

10. throat
windpipe

14. Pathway of Oxygen
Capillary walls are so thin and close to each other that the air easily diffuses through.

16. Pathway of Oxygen
Oxygen diffuses through the capillaries into the bloodstream.
Carbon dioxide in the bloodstream, diffuses through into the alveoli, and is then removed from the body when we breathe out.

19. (windpipe)
What is the purpose of
the alveoli?

20. Label the
Diagrams
As “inhale”
And “exhale”

21. Essential Questions to
answer

22. Explain how 2nd hand smoke affects you even though you are not a smoker.