We've just uploaded a new series of songs into some of our lessons in year 2. Here's a song on muscles.
Did you know there are more than 600 muscles in the body, doing everything from pumping blood to moving food through the intestines, to helping lift heavy objects (like backpacks). Some of these muscles can be controlled, and others like the heart and intestines do their jobs without having to think about it. All muscles are made of basically the same material, very elastic (like rubber bands), and made up of thousands of tiny fibers. There are three different kinds of muscle - smooth, cardiac, and skeletal muscle.
Smiling takes 17 muscles in the face, while frowning takes 43!