What fetal structures aid in by-passing the pulmonary circuit?
A)umbilical veins
B)foramen ovale
C)ductus arteriosus
D)Both foramen ovale and ductus arteriosus

Question

Quizplus · Accepted Answer

The foramen ovale and ductus arteriosus are fetal structures that allow blood to bypass the pulmonary circuit. The foramen ovale allows blood to flow directly from the right atrium to the left atrium, while the ductus arteriosus connects the pulmonary artery to the aorta, both reducing blood flow to the non-functioning fetal lungs.

What Fetal Structures Aid in By-Passing the Pulmonary Circuit