For my STEAM project I sewed models of human lungs. One healthy model and one of lungs damaged by smoking. The healthy pair of lungs is made of a soft felt, mimicking the ease at which healthy lungs move in the body. They are also larger and more regular in shape. This is due to the structural health and stability of them. I also gave them the pattern of red blood vessels to demonstrate the well oxygenated healthy blood they would circulate. With the unhealthy lungs I made them of a rougher felt to demonstrate the elastin damage. I also made them small, misshapen, and a darker color to demonstrate to tissue breakdown the comes from an over breakdown of the tissue. Lastly, I patterned the blood vessels with black threat to show the under oxygenated unhealthy blood that the damaged lungs produce.