Blog 8 Lung Model/Ventilation

Lung Model/Ventilation

       This model shows how the lungs function. The steps to make this model are to: 

1. obtain a bottle 

2.  cut the bottom of it off 

3. screw a hole into the cap so the straw can fit perfectly through 

4. fashion the straw to act as the bronchial

5. tape balloons onto the ends of the straw 

6. put a ballon to cover the hole at the bottom and wrap a rubber band around it - the balloon at the bottom will act as a diaphragm. 

The model shows how the lungs function. When you pull at the base of the diaphragm it causing it to expand and for air to fill the lungs. When you let go of the diaphragm (when it contracts), air leaves the lungs, causing them to shrink.