Veins return blood from the remainder of the body to the guts. To return blood to the center, the veins within the legs must perform versus gravity. Weakened valves, also called incompetent valves, inside the veins could possibly induce varicose veins. تنقبض العضلات الموجودة في أسفل الساقين لتكون بمنزلة مضخات. https://www.sgvascularctr.com/varicose-vein-treatment-in-singapore-answers-to-your-most-common-questions/