Veins are thin-walled vessels that function to return blood again to the heart. The veins from the legs need to transport blood in opposition to gravity to satisfy their operate and so they rely on two mechanisms to accomplish this: Pay a visit to the MOH Web-site with the breakdown https://www.sgvascularctr.com/varicose-vein-treatment-in-singapore-from-the-perspective-of-a-vascular-surgeon/