In fetal circulation, blood bypasses the lungs by flowing through
A)the umbilical vein and umbilical arteries.
B)the fossa ovalis and umbilical arteries and vein.
C)the foramen ovale and ductus arteriosus.
D)the ductus venosus and ductus arteriosus.
E)the ligamentum venosum and ligamentum arteriosum.

Question

Quizplus · Accepted Answer

In fetal circulation, the foramen ovale allows blood to flow directly from the right atrium to the left atrium, bypassing the lungs. The ductus arteriosus connects the pulmonary artery to the aorta, further bypassing the lungs.

In Fetal Circulation, Blood Bypasses the Lungs by Flowing Through