Varicose veins seen in the superficial veins of the legs are unsightly and are often treated by surgical removal. however, even without these veins being present, the return of all blood toward the heart from the legs is not diminished. this is primarily because varicose veins seen in the superficial veins of the legs are unsightly and are often treated by surgical removal. however, even without these veins being present, the return of all blood toward the heart from the legs is not diminished. this is primarily because the precapillary sphincters will contract to prevent blood from flowing toward areas where veins have been removed blood can still return via the deep veins in the absence of the venous valves (that have been removed), the blood will backflow into the capillary beds and then flow into other venules all of the listed responses are correct.