1. Circulation and Respiration
How Does the Heart and Lungs Work Together?

2. ENGAGE
Engage 1:
Obtain a pluck from Owen’s Sausage or local butcher. Demonstrate how air goes in and out of their lungs. The lungs are very elastic and will expand greatly. Allow the students to look at the heart, lungs and trachea.

3. Do-It-Yourself Lung Model
EXPLORE
Explore 1
Construct a Lung Model
Have students work together in groups to construct a lung model
Do-It-Yourself Lung Model

4. Assemble the “Lungs”
Step 1
Step 2

5. Construct the “Chest Cavity”
Step 3
Step 4

6. Prepare the “Diaphragm”
Step 5
Step 6

7. Start “Breathing”

8. Measuring Lung Capacity
Explore 2
In this investigation, you will determine the tidal volume and vital capacity of your lungs.

9. EXPLAIN

10. Respiratory System Structures
Pair of Lungs
Series of passageways
Trachea
Bronchi
Bronchioles
Alveoli
Diaphragm (thin sheet of smooth muscle)

11. Respiratory System Function
Involves all mechanisms that get O2 to the cells via the bloodstream
Gets rid of the waste gas CO2
Formation of ATP for energy

12. Path Air Takes Air enters nose or mouth Passes Pharynx
Moves past epiglottis
Passes through larynx
Trachea
Lungs and their passageways

14. Respiratory System
I bring in the oxygen that is carried on the red blood cells…without me you’d have no oxygen to carry!
I carry the CO2 (waste gas) out of the body.
The circulatory system needs me for gas exchange.
The muscles need oxygen to move.
The brain needs my oxygen to think.
Without this system gas could (02 primarily) would not enter our systems
Without this system CO2 could not exit the body after being expelled as a waste in cellular respiration
Circulatory system carries these gases to the alveoli to be expelled
Diaphragm ( a muscle) is what forces lungs to inhale and exhale 14

15. Breathe Easy

16. The Lungs A lung weighs about 600 grams
Total LUNG CAPACITY of an adult is between 5 and 6 liters
A NORMAL breath is about 0.5 Liters
VITAL LUNG CAPACITY is the maximum amount of air that can be EXHALED at ONE time

17. The Diaphragm A large sheet of MUSCLE at the BOTTOM of the rib cage.
When you INHALE, this muscle DROPS and the rib cage RAISES
This motion INCREASES the VOLUME of the lung cavity causing a LOW PRESSURE area
EXTERNAL air pressure FORCES air INTO the lungs

19. The Pharynx A muscular organ at the back of the throat
The respiratory and digestive systems branch here
The epiglottis is located in the pharynx

21. The Trachea Also called the “WINDPIPE”
A NON-MUSCULAR tube leading from the PHARYNX to the LUNGS
There are RINGS of CARTILAGE spaced along this rube to keep it open

22. Bronchi and Bronchioles
The two branches of the trachea leading to the two lungs
Bronchioles
The smallest branches of the bronchial tubes

24. The Aveoli
The air sacs at the end of each brochioles

25. ELABORATE Exhaling Color your Lungs
Andrea knows that her breathing rate increases when she starts to run or exercise. She thinks it is because she needs to increase her oxygen intake. Does increased activity have an affect on the amount of carbon dioxide she exhales? Design an experiment that will answer her question.
Color your Lungs

26. EVALUATE
Upon completion of the human lung model the student will explain the mechanism of breathing through the use of their model, they will name the gases the primary gases that compose air, and they will name the gases we exhale. A grade of pass or fail will be given.
After creating the respiration model the student will list six components of respiration: Nose, trachea, bronchi, bronchioles, alveoli, and lung.