[[Blood vessel]]s that carry blood back to the [[heart]].<ref>Wile, Dr. Jay L. ''Exploring Creation With General Science''. Anderson: Apologia Educational Ministries, Inc.
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'''Veins''' are [[blood vessel]]s that carry blood back to the [[heart]].<ref>Wile, Dr. Jay L. ''Exploring Creation With General Science''. Anderson: Apologia Educational Ministries, Inc.
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2000</ref>
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2000</ref> The two largest veins in the body are the [[vena cavae]].