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| Structure of Vein |
- A blood vessel conveying blood towards the heart.
- All veins except pulmonary vein carry deoxygenated blood from the tissues, via the capilaries, to the vena cava.
- The walls of veins consist of three tissue layers, but these are much thinner and less elastic than those of arteries.
- Veins contain valve that assist the flow of blood back to the heart.
- Anatomical name : Vena
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