So we have the corona suture, we have the squamous suture, we have the lambdoid suture, as shown in the diagram. And if we zoom in on either one of these three sutures, we basically get the following image. So, we have the bone section and we have this joint shown in blue. And this is our fibers joint, also known as the fixed or immovable joint. And the same thing on the teeth. If we zoom in on this single upper tooth, that is connected to our upper jaw, also known as our maxilla.