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Questions and Answers
The circulatory system flows ______ throughout the body for us to be healthy and strong.
blood
Arteries carry ______ blood away from the heart to the rest of the body.
oxygenated
The main artery is named as ______.
aorta
The walls of arteries are thicker and elastic than the veins as they flow blood at a high ______.
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Veins carry ______ blood back to the heart.
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The main vein is ______ cava (superior and inferior).
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Veins are located closer to the skin surface as they carry blood under lower ______.
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Valves in veins stop the blood from flowing ______.
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Blood vessels include arteries, veins, and ______.
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The lumen of arteries is the space where the ______ flows.
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