ag5reecelzadmadrian ag5reecelzadmadrian
  • 27-02-2017
  • Health
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Blood pressure in veins is lower than in arteries, so a series of ________ are necessary to prevent backflow of blood.

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briannapham
briannapham briannapham
  • 28-02-2017
A series of ONE-WAY VALVES are necessary to prevent backflow of blood when blood pressure in veins is lower than in the arteries.
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