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Veins. By Brian Kotalik. Facts about veins. Veins carry blood to the heart. Veins are in your entire body. The smallest veins are called venules. Veins have thin walls. Veins would stretch about 60,000 miles on an average kid. . What are veins?.
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Veins By Brian Kotalik
Facts about veins • Veins carry blood to the heart. • Veins are in your entire body. • The smallest veins are called venules. • Veins have thin walls. • Veins would stretch about 60,000 miles on an average kid.
What are veins? • Veins are blood vessels that return deoxygenated blood to your heart and lungs while arteries carry oxygen. • Veins serve to return blood from organs to the heart.
Resources http://en.wikipedia.org/wiki/Vein http://justforhearts.org http://library.thinkquest.org/5777/cir2.htm