How Many Muscles Make Your Smile?: Questions About Muscles and Movement
PowerKiDS press FAQ How Many Muscles Make Your Smile Questions About Muscles and Human Body Movement by Thomas Canavan
Why do we need muscles We need muscles to perform just about any activity that involves movement These bundles of fibrous stringy tissues do so many things They move your bones open your eyes and help you chew Many of them work automatically pumping your heart helping you digest food and making sure you breathe regularly your heart Why can you hear Each thump of your heartbeat muscle forcing a heart valve part of the heart that controls the flow of blood shut is the sound of a heart 4
Which muscles make you talk Your tongue a collection of muscles forms many sounds Even opening and closing your mouth to form other sounds depends on muscles in your face and jaw And in order to force the air out of your mouth to make a sound you need to use the diaphragm muscle below your lungs How are we moving when we’re keeping still Imagine that your body is a factory It may look calm and quiet outside but inside there is lots going on Goods are being moved around doors are opening and closing and fuel is powering all of the machines Your muscles keep your body factory up and running even if you’re not moving around 5
