The muscular system contains tisssues that cooperates with bones and nerves of the body to allow locomotion.Some muscles in your body are voluntary muscles, which means that they can be controlled.Those are located in your arms, legs, etc... The muscles like your heart, stomach, intestine, are known as the involuntary muscle, which means that they controll themselves. There are three kinds of muscles in your body. The Cardiac, skeletal, and smooth. The skeletal muscles helps the body move. The cardiac muscle is located at the heart. It's movement are involuntary. Smooth muscles are also involuntary. They are located at the intestines, stomach, etc...
Muscular System