Vein used to bypass the coronary aery
Varicose veins are due to the touosity of the long saphenous vein and occur mostly due to prolonged standing.The long saphenous vein is used to bypass the coronary aery after inveing the vein.Ref: Chaurasia; Volume 2; 6th edition; Page no: 135
Long saphenous vein
Sho saphenous vein
Soleal vein
Tibial vein
Lower limb