________ Carries Poorly Oxygenated Blood into the Right Atrium

Question

________ Carries poorly oxygenated blood into the right atrium
A)Ductus arteriosus
B)Septum primum
C)Sixth pharyngeal arch artery
D)Sinus venosus
E)Umbilical vein

Accepted Answer

The Sinus venosus is responsible for carrying poorly oxygenated blood into the right atrium of the heart, especially during fetal development before it becomes part of the wall of the right atrium.