I did my STEAM project on uterine smooth muscle. I chose to do this because I thought it was crazy how the uterus can go through such drastic changes but yet shrink back to size. That the uterus is able to stretch up to 500 times it original size. The uterine smooth muscle stretches over 9 months until the baby is born and the instance the baby is born contractions continue and can return back to normal size in as little as a week. I made a life size models of the uterus at the original form and how big the uterus stretches to.