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What carries Blood back to the Heart?

  • A.Veins
  • B.Arteries
  • C.Both a & b
  • D.None

Answer: A

Veins carry blood back to the heart.

The pressure in them is low, so they have thin walls and rely on the squeezing of surrounding muscles to move the blood, with one-way valves to stop it flowing back. Arteries carry blood away from the heart at high pressure.

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