What is the role of cambium in stem life?

On the cross section of the stem under a microscope, its four main layers are clearly visible: bark, cambium, wood and pith. The structure of each layer depends on its function. Thus, the thinnest layer of the stem – the cambium – consists of educational tissue, the cells of which are constantly dividing. Some of the new cells move towards the bark, and the other part – towards the wood. That is, THE FUNCTION OF THE CAMBIUM IS THE GROWTH OF THE STEM IN THICKNESS. The layer of wood that was formed during the spring, summer and autumn of one year is called a tree ring.