Blood go to heart with one direction or different type of direction
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Unlike arteries, veins contain valves that ensure blood flows in only one direction. (Arteries don't require valves because pressure from the heart is so strong that blood is only able to flow in one direction.) Valves also help blood travel back to the heart against the force of gravity.
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●Additional information●
■The direction of blood flow is controlled in, and by the heart. The heart has 4 chambers, the left and right atrium and the left and right ventricular.
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■ As the heart pumps blood, a series of valves open and close tightly.
♧These valves ensure that blood flows in only one direction, preventing backflow.
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