What are Human Muscles Made of?

It is hard to believe your body has about 650 muscles, and those muscles are made up of fibers that allow the muscle to shorten and lengthen, allowing you to move. Those muscles are attached to your bones by tendons and that is how you get joints to move. However, you do have 3 different types of muscles skeletal, smooth, and cardiac. Your body is so complex and your muscular system is just one of your body’s systems that allow you to function.