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How do your veins work?

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Video Overview

How do your veins work? There are two sets of veins in our lower extremities. One is the superficial set called the saphenous vein and its derivative. The second is the deep vein, which lies underneath the musculature of the leg called the femoral vein and its derivatives. The function of veins is merely to return blood to the heart, and it does so through the pumping action of your calf muscle. When you are walking the calf muscle contracts and it squeezes the veins in your calves and forces the blood through the veins to your heart. When you are not walking the blood is trapped in between what we call normal functioning one-way valves. There are multiple valves, both the competent renal and the deep renal vein. It is the abnormal valve function that leads to varicose veins.

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