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This Concept Map has information related to: What I know about Circulation, What do I know about Circulation? Vessels Capillaries, Veins Return to heart Deoxygenated blood wastes, PUMPS blood to facilitate O2 transport, What do I know about Circulation? Vessels Veins, PUMPS blood to facilitate Transport of waste, What do I know about Circulation? Heart PUMPS blood, Capillaries Microscopic level Gas, nutrient, waste excahnge, PUMPS blood to facilitate Nutrient transport