Muscular System

By Maddy Babb


The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles. It permits movement of the body, maintains posture, and circulates blood throughout the body.


- Muscles make up 40% of your total body weight

- The smallest muscles are found in the middle ear

- It takes 17 muscles to smile and 42 to frown

- The largest muscle in your body is your butt


function of the muscular system is movement. Muscles are the only tissue in the body that has the ability to contract and therefore move the other parts of the body. Related to the function of movement is the muscular system's second function: the maintenance of posture and body position.