1. The Respiratory System
Ms. Kelly
7th Grade Health

2. Journal:
You have learned about the harmful chemicals in cigarette smoke and discussed other products these chemicals are found in. These chemicals have harmful effects on the respiratory system, as well as other body systems. Despite having this knowledge, approximately 4000 teens will start smoking their first cigarette today. People say knowledge = power, but this does not always appear to be the case. Why do you think this is? What factors influence adolescents to make poor decisions regarding tobacco use?

3. Journal:
Respond: Did the video we watched last class have an impact on you? Why or why not? Which specific scenes or information (if any) were most influential? Why?

4. Primary Function
 To supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. (This is done through breathing.)

5. Breathing In and Out Inspiration: “Breathing in” or inhaling
Expiration: “Breathing out” or exhaling
Oxygen: what we breathe in during inspiration
All of the cells in our body need this to live
It is the fuel that makes all body processes run 
Carbon dioxide: what we breathe out during expiration
The waste product in our bodies

7. Parts of the Body Involved
Nose
Throat
Voice box
Windpipe
Lungs

8. Nose Organ used during inhalation and exhalation
Cilia helps trap and filter out dust and other particles that enter during inspiration

9. Mouth
With nose, warms and humidifies air entering the lungs through inspiration.

10. Pharynx
AKA “The Throat “
Carries both food and air

11. Esophagus
Passageway for food

12. Epiglottis
A small flap of tissue that covers the air passage when we swallow
Keeps food and liquid from going into lungs

13. Larynx AKA “The Voice Box” Uppermost part of the air-only passage
Contains vocal cords, which vibrate to produce sound

15. Trachea AKA “The Windpipe” Extends downward from base of larynx
Held open by “C” rings of cartilage for easy air-flow

17. Bronchi
Branches off of the trachea into the lungs

18. Bronchioles Smaller branches off of the bronchi
Contain alveoli (air sacs)

19. Alveoli
Where the exchange of oxygen and carbon dioxide actually takes place
Each lung houses about 300 to 400 million alveoli!!

21. PLACE THE FOLLOWING IN THE ORDER THAT A MOLECULE OF OXYGEN TRAVELS (FROM THE OUT-IN)
BRONCHI
ALVEOLI
NOSE
LARYNX
PHARYNX
MOUTH
BRONCHIOLES
TRACHEA

22. Ribs
Protect the lungs and much of the respiratory tract

23. Diaphragm Muscle that separates chest from abdomen
Helps regulate breathing by moving up and down

24. When we breathe IN Diaphragm moves downward toward the abdomen
Rib muscles pull the ribs upward and outward, enlarging the chest cavity and pulling air in through the nose or mouth

25. When we breathe OUT Diaphragm moves upward
Chest cavity to get smaller and pushes the gases in the lungs up and out of the nose and mouth.

28. Pathway of Oxygen

29. nose
mouth
pharynx
larynx
trachea
lung
R. bronchus
L. bronchus
bronchiole
alveoli
diaphragm

30. http://www. britannica