So tendons and muscles basically work together to move our bones and that ultimately controls the movement of our body. It allows us to move in a wide range of different ways. Now there are many examples of muscle bone systems in our body and the example we're going to look at is the movement of our arm. And this involves two very important types of muscles, the biceps muscle and the triceps muscle as well as all these bones as shown in the diagram. So basically this is our bicep muscle, this bone is the humerus bone and the muscle behind the humerus bone is our tricep muscle. Now when we actually create this motion, what happens is the humorous muscle does not actually move or the humorous bone does not actually move.