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Blood is a constant whereabout in our bodies. As of such a frequent heartbeat exists within our system. Which causes the blood within our bodies to flow forward, in lamense terms it produces a very large push for the blood to distribute it's nutrients throughout the body and back within our heart and out again. This constant push is what prevents blood from flowing backwards in your veins.

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Wiki User

11y ago
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Wiki User

12y ago

Positivt venous blood preassure and shaft system in major veins prevents backward bloodflow in veins.

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Wiki User

13y ago

We have valves that prevent the backward flow.

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Wiki User

12y ago

The heart, the heart pumps the blood so it wouldn't let the blood flow backwards.

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Geraldine Cuapio

Lvl 2
3y ago

The valves are tubes that make sure blood does not flow backwards into the heart

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Wiki User

11y ago

Valves in the artery

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Q: What makes sure the blood does not go backward?
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