Veins

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1. How are they different from other blood vessels? Veins are thinner and will colapse if blood is not flowing through them.

2. What is the direction of blood flow? The blood flows towards the heart from the rest of the body.

3. How thick are vein walls? Vein walls are 3 layers thick.

4. Whats the primary job? To carry blood that no longer has any oxygen back to the heart.

5. Where are they found? Close to the surface of the skin. []



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