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Topic Review (Newest First)

  • 09-05-2013, 12:29 PM
    fortion
    the answer is valves
  • 01-09-2013, 09:08 PM
    Unregistered
    hello where is the answer
  • 11-25-2010, 05:28 AM
    Nikki

    The one-way flow of blood in veins is maintained by?

    The one-way flow of blood in veins is maintained by

    The one-way flow of blood in veins is maintained by ______________. positive pressure from the chest cavity
    blood pressure
    muscles pressing against the veins
    their thick walls
    valves

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