Full lesson with PPt and differentiated worksheets, once completed students will be able to: Describe the structural differences between arteries, veins and capillaries. Explain the functions of arteries, veins and capillaries. Explain how the structure and functions of the arteries, veins and capillaries works in the circulatory system. Apply the knowledge of the functions and structure of blood vessels to the body when exercising. Label the components of the heart.