DNB June 2011 – MCQ 27

True statement regarding portal venous system is?
A. Valves are present at tje junciton of superior mesenteric artery and splenic artery
B. Whole system is valveless
C. Valves are present in the intrahepatic system
D. ??

Please contribute to the discussion by posting the answer with references and pointing out any error in the question!