• Question: Is it true that ur blood is blue while inside ur body? and go\'s red when u get a cut?

    Asked by 9magub to Antonia, Douglas, Hugh, Matt, Tom on 21 Jun 2010 in Categories: .
    • Photo: Matthew Hurley

      Matthew Hurley answered on 18 Jun 2010:

      No -afraid not. Deoxygenated blood in veins is a lot darker than oxygenated blood in arteries though.

    • Photo: Douglas Blane

      Douglas Blane answered on 18 Jun 2010:

      No, that’s a myth.

      Blood is blueish when the oxygen has been taken out of it and it’s heading back to the heart and lungs.

      That’s in the veins.

      It’s red in the arteries – and the small blood vessels called capillaries – when it’s full of oxygen from the lungs, and is heading out to the muscles.

      Blood gets pumped all round our bodies by the heart. It comes back blue from the muscles. Then it goes through the heart and into the lungs. It picks up oxygen there and turns red.

      It then goes back to the heart, still red, and gets pumped out to the arms, legs, brain and everywhere else in our body.

      Our cells take the oxygen out of the blood and combine it with food to make energy. Now the blood’s blue, and it heads back through the veins to the heart to start all over again.

      I’m tired just describing it. Your heart’s an amazing muscle.

    • Photo: Hugh Roderick

      Hugh Roderick answered on 21 Jun 2010:

      Nope

    • Photo: Tom Hardy

      Tom Hardy answered on 21 Jun 2010:

      No, blood is red, inside or out!

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