This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bronchopulmonary Segments, Embryonic veins, Subject name: Anatomy
Sinus venosus receives blood from all EXCEPT 
Select and explain. 
A. Vitelline vein, B. Umbilical vein, C. Common cardinal vein, D. Subcardinal vein
D: Subcardinal vein
Answer: D: Subcardinal vein 
Explanation: Right & left sinus venosus each receives the union of the corresponding: Umbilical vein Vitelline vein Common cardinal vein Right vitelline vein forms the poal venous circulation and the hepatic poion of IVC. Common cardinal veins - forms neck veins. The umbilical veins degenerate.