In fetal circulation the descending aorta carries the less oxygenated blood from the _________.
A) foramen ovale.
B) ductus arteriosus.
C) ligamentum arteriosum.
D) ductus venosus.

Question

Quizplus · Accepted Answer

The ductus arteriosus is a fetal blood vessel that connects the pulmonary artery to the descending aorta. This allows most of the less oxygenated blood from the right ventricle to bypass the lungs and flow directly into the systemic circulation. Therefore, the descending aorta carries the less oxygenated blood from the ductus arteriosus.

In Fetal Circulation the Descending Aorta Carries the Less Oxygenated