What vessel in the fetus connects the pulmonary trunk to the aortic arch so that most of the blood bypasses the immature lungs?

Question

Quizplus · Accepted Answer

The vessel that connects the pulmonary trunk to the aortic arch in the fetus is the ductus arteriosus. This allows most of the blood to bypass the immature lungs and instead flow through the placenta to receive oxygen and nutrients. The ductus venosus connects the umbilical vein to the inferior vena cava, the foramen ovale is an opening in the fetal heart between the right and left atria, and the umbilical vein carries oxygen and nutrient-rich blood from the placenta to the fetus.

What Vessel in the Fetus Connects the Pulmonary Trunk to the Aortic