Human Circulatory System WIP

This is a tiny piece of a large, multi-piece hands-on exhibit about at the Pacific Science Center called Blood and Guts, which is all about the body systems. It is a traveling exhibit geared towards elementary children. This is an illustration of the circulatory and pulmonary systems and will be superimposed over a photo of a jumping child. I really enjoy the thin, lacy details as the arteries and veins taper into capillaries and venules.