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They carry deoxygenated blood
their walls are thin
their lumen is larger than arteries
elasticity is less than artery
bluish in color
blood flows in vein is with low pressure
their valves maintain unidirectional flow of blood
Wiki User
∙ 7y ago
Wiki User
∙ 13y agoVeins are built with valves so that the blood does not flow backwards.
The blood flow in veins are slow and smooth. The flow is maintained by the contraction of skeletal muscles which squeeze the veins between them.
Hope this helps:)
Wiki User
∙ 16y agothey have valves to help return blood to the heart. They carry blood away from the heart and carry unoxygenated blood and are affected by gravity.
Wiki User
∙ 11y agoalways carry deoxygenatated blood.
Wiki User
∙ 12y agothey appear to be blue.
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