1. What is it? Main Parts of it
Respiratory System
What is it?
Main Parts of it 1

2. In Your PODS
Come up with 4 things that you know about the Respiratory System (or think you know).
Come up with 4 questions that you have about the Respiratory System. 2

3. MAIN PURPOSE OF RESPIRATORY SYSTEM3

4. MAIN PURPOSE OF RESPIRATORY SYSTEM
Respiration
(Breathing)
* We need oxygen
to survive!! 4

5. 1. What happens in our bodies when we breathe?
In Your PODS
1. What happens in our bodies when we breathe? 5

6. What Happens When We Breathe?6

7. Respiration (Oxygen/CO2 Exchange)
Take out a piece of notebook paper to draw on.
Draw a heart, two
lungs, and a stickman.
Taking Pulmonary
Circulation a step
further.

8. Respiration (Oxygen/CO2 Exchange)8

10. 2. Why do you think our bodies cough?
In Your POD’s
2. Why do you think our bodies cough?

11. Why Do We Cough?
2. Our body’s natural way of clearing dust and anything else in our windpipe or lungs.
We have an automatic “cough reflex” in our body that detects when it’s necessary to cough.
Our “cilia”, tiny little hairs in our airways, collect dirt. So when they fill up…. COUGH!! 11

12. How Does Coughing Work?
When your body senses that there is something in your airway that shouldn't be there, you:
automatically take a deep breath,
close your windpipe at the epiglottis momentarily,
push air against the closed epiglottis with your lung muscles to build up extra pressure, and
then open your epiglottis.
When the epiglottis opens, the high-pressure air comes out explosively, and the explosion helps force the matter out of your airways. You can also cough whenever you want to, whether to clear your throat or for other reasons. 12

13. 3. Why do we get runny noses? Why do we sneeze?
POD Question
3. Why do we get runny noses? Why do we sneeze? 13

14. Why Runny Noses? Why Sneezing?
3. It’s another way to protect our airways and to clean out any irritants. We produce more mucous to “flush” out the irritants.
Allergies irritate our mucous membranes and make us produce an excessive amount.
Sneezing: Also a reflex. Similar to the coughing reflex where cilia are filled with dirt or particles in the nose, then ACHOO!!! 14

15. 4. Why is the Respiratory System a common site of infection?
POD Question
4. Why is the Respiratory System a common site of infection? 15

16. Why Susceptible To Infections?
4. Because germs can easily enter through your nose and mouth. 16

17. Sleeping Or Running A Mile?
POD Question
5. What requires more oxygen?
Sleeping Or Running A Mile?
WHY?

18. More Oxygen? Sleeping or Mile Run?
5. Running a mile, because the demand for oxygen is greater.

19. POD Question 6. What else happens in our bodies when the demand for
oxygen is
increased? (Hint:
Think about other
systems we’ve
learned about…..)

20. Demand for Oxygen Increased….?
6. Our heart needs to pump more often in order to pump out more blood to the muscles so that they can get proper oxygen to meet the increased demand.
* Also, our brain prioritizes where blood
should go.

21. POD Question
7. Come up with a list of 4-5 activities where respiration (breathing) is essential (very important) to the activity.

22. Activities of Respiration

23. Activities of Respiration23

24. Activities of Respiration24

25. Activities of Respiration25

26. Take out your Respiratory Diagram Take out your Respiratory Diagram26

27. The Flow of Air Air enters through the NOSE and MOUTH
Lined with mucous membranes
Fine hairs called cilia trap dirt 27

28. From the nose and mouth to the…..
Throat
Has two passageways
One for air
One for food (down to digestive system)
“It went down the wrong tube!”…… 28

29. Throat to the…. Epiglottis
A flap of tissue that closes over the trachea when you swallow. 29

30. Epiglottis to the………… Larynx Contains the vocal cords
It grows larger during puberty
Adam’s Apple
(***Hum to find where your larynx is).

31. Larynx to the…..
Trachea
Directs air to the lungs.
Long tube 31

32. Trachea to the….. Bronchi Passages through which air enters the lungs
You have a left and right “bronchus” because they are like a “V”
They go directly into the lungs 32

33. Bronchi to the…..
Lungs
Oxygen is transferred into the blood and carbon dioxide is removed from the blood.
(Alveoli and capillaries) 33

34. Healthy Lungs

35. Lungs of a Smoker
On left,
Empysema
On right,
Lung Cancer

36. What's in a Cigarette?
There are approximately 600 ingredients in cigarettes. When burned, they create more than 4,000 chemicals. At least 50 of these chemicals are known to cause cancer, and many are poisonous. 
Many of these chemicals are also found in consumer products, but these products have warning labels. While the public is warned about the danger of the poisons in these products, there is no such warning for the toxins in tobacco smoke.
Here are a few of the chemicals in tobacco smoke, and other places they are found:
Acetone – found in nail polish remover
Acetic Acid –  an ingredient in hair dye
Ammonia – a common household cleaner
Arsenic – used in rat poison
Benzene – found in rubber cement
Butane – used in lighter fluid
Cadmium – active component in battery acid
Carbon Monoxide – released in car exhaust fumes
Formaldehyde – embalming fluid
Hexamine – found in barbecue lighter fluid
Lead – used in batteries
Napthalene – an ingredient in moth balls
Methanol – a main component in rocket fuel
Nicotine – used as insecticide
Tar – material for paving roads
Toluene - used to manufacture paint

37. Smoker vs. Non-Smoker Lungs

38. Questions?? ? 38

39. In Your PODS Partner up with one person within your POD
Act as if they have never heard anything about how blood gets oxygen and how the body gets out bad carbon dioxide.
Draw for them on a napkin (or on notebook paper) the entire process of Oxygen/CO2 exchange. Label parts. Try not to use your notes!!
Then, you pretend that they didn’t teach you anything and draw and teach the same thing to them.

40. Respiratory Lab What does smoking ONE cigarette do to your lungs?
LET’S FIND OUT!!