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17 October, 22:22

All veins return blood to the heart. all veins return blood to the heart.

a. True

b. False

+3
Answers (1)
  1. 18 October, 00:39
    0
    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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