So now I want to increase my angle between these bones and my joint hinge. And I basically want to move these two movable bones away from my body. And basically for this to actually take place, the electrical signal now must basically cause the contraction of the tricep muscle. So the tricep muscle thickens, it basically shortens as a result of that contraction of the contraction of the sarcomeres inside the skeletal muscle. At the same time the bicep is stretching out, it's basically elongating. And you can see that as this motion takes place, this muscle basically stretches out.