Respiratory System Discovery Stations

1. The Lungs Inside/Outside www.smm.org/heart/lungs/top.html Outside Lungs Inside Lungs

2. Exhale on a Mirror 1) What do you exhale? What comes out of your body each time you breathe out? Be specific. Carbon dioxide(CO2) 2) What did you observe when you exhaled on the mirror? We exhale carbon dioxide(CO2) and water vapor(the fog on the mirror).

3. Bottle Lung Model 2)What does each of the part of the model represent? Balloon = lung bottle = rib cage plastic = diaphragm 1 &3)Describe in detail what you did to make the balloon inflate and deflate. When the diaphragm(plastic) moves down air goes into the balloon When the diaphragm(plastic) goes up the air goes out of the balloon.

4. Microscope slide of lung 1) Draw what you see 2) Do you think there is a purpose to all of the sacs and branches in the lung? If so, what is the purpose?   Yes, they hold the gasses (oxygen, water vapor, and carbon dioxide) 3) In order to function, does the lung need a lot of sacs and branches? What is your evidence? Yes, I can see quite a few holes (air sacs) in this slide which is a small piece of lung.

5A. Micro viewer Slide of Lung section 1) Draw what you see 2) Do you think there is a purpose to all of the sacs and branches in the lung? If so, what is the purpose? Yes, they hold the gasses (oxygen, water vapor, and carbon dioxide) 3) In order to function, does the lung need a lot of sacs and branches? What is your evidence? Yes, I can see quite a few holes (air sacs) in this slide which is a small piece of lung.

5B. Stereoscope of Lung Notice the holes = air sacs in alveoli in the lung How does this compare with the cross section of the lung that was observed under the microscope? This is a 3 dimensional view, the microscope is a flat view. You can see the air sacs in the lung tissue.

6. Lung Capacity Blow 1 breath into the balloon Measure the circumference Find your lung capacity (repeat) Who was able to blow the most air into their balloon? What is it about the person that enabled him/her to do this? Is it size, gender, amount of exercise, having asthma or a combination of factors?