All of the following veins lack valves except: (A) Femoral vein, (B) Poal vein, (C) IVC, (D) Dural venous sinuses
Answer is A. Veins which do not have valves are:IVCSVCHepatic, ovarian, uterine, renal, emissary, cerebral, pulmonary, and umbilical veinsPoal venous system is a valveless system