A complete schematic model of the human circulatory system with ‘blood’ (coloured water) that flows through the transparent veins, arteries, capillaries and heart chamber. This model’s special design portrays venous blood, a deep reddish purple and arterial blood, a bright red to give visual reinforcement to the oxygenation and deoxygenation of haemoglobin as it travels the body’s vascular network. Shows the work of the valves, contractions of the ventricles and the atriums. Made of plexiglass and silicon and mounted on a baseboard with support legs. Supplied with Teacher’s guide, red colour and syringe for refilling the system. Size: 350 x 370mm.