The class completed the Lung Worksheet prior to this activity to ensure all students were familiar with the terminology. 

Before utilizing our model, we hypothesized:

• what would happen when we pulled the diaphragm down (the bottom balloon)
• what would happen if we blocked the tip of the straw (simulating choking) and discussed the Heimlich maneuver.
• what would happen if there was a hole in the lung (small orange balloon)

The results:

• the lung filled with air when the diaphragm was pulled down
• the lung squeezed out the air when the diaphragm was pushed up
• when the straw was blocked, the lung did not change size
• if there is a hole in the lung, the lung did not change size

Plastic bottle - The rib cage/body

Small orange balloon - one human lung

Pink bottom balloon - the diaphragm

The straw section in the balloon - bronchioles

The straw section attached to the balloon - bronchial tube

The straw section above the balloon - trachea

Students had to label:

Trachea (windpipe)

Esophagus

Bronchial Tube

Bronchioles

Lungs

Diaphragm

Air sacs