The ductus arteriosus is a fetal vascular shunt that allows blood to flow from the pulmonary trunk directly into the aorta.

Name: The ductus arteriosus is a fetal vascular shunt that allows blood to flow from the pulmonary trunk directly into the aorta.
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The ductus arteriosus is a fetal vascular shunt that allows blood to bypass the non-functioning fetal lungs and flow from the pulmonary trunk directly into the aorta. After birth, the ductus arteriosus should close and become the ligamentum arteriosum.

The Ductus Arteriosus Is a Fetal Vascular Shunt That Allows