In fetal circulation, most blood bypasses the fetal lungs by way of the:
A)foramen ovale and ductus venosus
B)ductus venosus and umbilical vein
C)umbilical vein and ductus arteriosus
D)ductus arteriosus and foramen ovale

Question

Quizplus · Accepted Answer

In fetal circulation, most blood bypasses the fetal lungs through two main structures: the ductus arteriosus, which allows blood to flow from the pulmonary artery directly into the aorta, and the foramen ovale, which allows blood to flow from the right atrium directly into the left atrium. This adaptation is crucial because the lungs are not used for gas exchange until after birth.

In Fetal Circulation, Most Blood Bypasses the Fetal Lungs by Way