Important structures and functions of the circulatory system

Describe the important structures and functions of the circulatory system that promote a circular flow of blood. You may use a flow chart to help with your description. 3 marks. (b) In Western society humans can make many choices with respect to the type of diet and the lifestyle that they pursue. Some people inherit cardiovascular disorders while other people have circulatory complications due to lifestyle choices. Describe two discoveries in science and/or technologies related to circulation that might be used to treat people with circulatory disorders.