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You may be in a hurry so: The Vena Cava
Read on if you are not in a hurry:
The superior vena cava, which receives blood from the upper body, and the inferior vena cava, which receives blood from the lower body region. Both venae cavae empty the blood into the right atrium of the heart.
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Blood vessels are IN the tubes, now, the tubes that carry blood away from the heart and into the body are called arteries."
Veins carry blood in and arteries carry it out.
Tubes that carry blood are veins and arteries. Arteries carry oxygenated blood from the heart to the body parts. Veins carry blood from the body to the heart.
Capillaries are the very small tubes that ultimately carry blood to the body cells. The capillaries allow diffusion of materials between the cells and the bloodstream.