makadz6635 makadz6635

30-03-2018
Biology

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All veins return blood to the heart. all veins return blood to the heart.
a. True
b. False

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ellafazackerley ellafazackerley

30-03-2018

Most veins carry deoxygenated blood back to the heart, however the pulmonary and umbilical veins carry oxygenated blood back to the heart.

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