By Maddy Babb
- 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.