This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower limb, Subject name: Anatomy
Vein used to bypass the coronary aery 
Select and explain. 
A. Long saphenous vein, B. Sho saphenous vein, C. Soleal vein, D. Tibial vein
A: Long saphenous vein
Answer: A: Long saphenous vein 
Explanation: 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