Skeletal and Muscular Systems Experiments - Qld Science Experiments: Skeletal and Muscular Systems Magic Arm Lift. Stand in a doorway and press the backs of your hands against the sides for about 30 seconds. Now take a step forward. What happens to your hands? Your arms will rise. Muscular System Science Experiments | The Classroom The muscular system is comprised of three different kinds of muscles: cardiac, skeletal and smooth. These muscles affect every part of the body, from moving fingers and blinking eyes, to breathing and keeping the heart beating.