Varicose veins in the legs
There are blood vessels in the body, so-called veins, that lead the blood back to the heart. In the legs, it is mainly the leg muscles that pump back the blood, for example when walking. Inside the veins of the legs are flaps, which act as valves for the blood to flow smoothly back to the heart. If a vein becomes very enlarged and winding, due to leaky flaps, it is called varicose veins.
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