The fetal structure that permits blood to flow from the pulmonary artery to the aorta is the:
A)foramen ovale
B)ductus arteriosus
C)ductus venosus
D)foramen magnum

Question

Quizplus · Accepted Answer

The structure that permits blood to flow from the pulmonary artery to the aorta in a fetal circulatory system is the ductus arteriosus. The foramen ovale allows blood to flow from the right to the left atrium in the fetal heart, while the ductus venosus allows for the shunting of oxygen-rich blood from the umbilical vein to the inferior vena cava. The foramen magnum is a hole in the skull through which the spinal cord passes. Therefore, the most appropriate choice is B, ductus arteriosus.

The Fetal Structure That Permits Blood to Flow from the Pulmonary