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                                    Circulation of blood by arteries and veins | 
                            
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Answer»  The arteries (red) carry oxygen and nutrients away from your HEART, to your body's TISSUES. The veins (BLUE) take oxygen-poor BLOOD back to the heart. Arteries BEGIN with the aorta, the large artery leaving the heart. They carry oxygen-rich blood away from the heart to all of the body's tissues.  | 
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