This is a working model of the diaphragm and lungs. You can see that when the diaphragm is distended, the lungs inflate, and when the diaphragm is relaxed, the lungs deflate. Also seen is the trachea and the bronchi where they split into the right and left lungs.


  1. Jessica has created a working example of the human lungs. This is a cleverly made model that helps demonstrate the working functions of the lungs in connection to the diaphragm. When the diaphragm pulls down, this is when air is filling into the lungs. And then as air is exhaled out of the lungs, the diaphragm will push back up into the chest cavity. It also depicts how the trachea will split into the left and right lung.
    This piece gives us a clear visual aid to see how this process works.

    Tracy Ingraham

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