The human skeletal system consists of a network of muscles and bones spread all over the body. They help us in moving the body and doing physical activities of daily life like walking, running and stair climbing. The movement of our entire body depends on bones and muscles. They help us in using force and motion for our activities. Even our heart is made of involuntary muscle. Face muscles help us in smiling and frowning. Any type of problem and disease in muscles and bones can affect our movements. We will tell you about some muscles and bones facts. Following are 10 interesting facts about human muscles and bones.