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Why do valves in leg veins docent make sound |
| Answer» TION:The veins in your legs CARRY blood back to your heart. They have one-way valves that keep blood from flowing backward. If you have chronic venous INSUFFICIENCY (CVI), the valves don't work like they should and some of the blood MAY go back down into your legs. That causes blood to pool or collect in the veins. | |