The ductus arteriosus allows fetal blood to move from the

Question

Quizplus · Accepted Answer

The ductus arteriosus is a blood vessel in a developing fetus that allows oxygenated blood from the placenta to bypass the lungs and flow directly into the aorta. This is important because fetal lungs are not functional while in the uterus, and instead rely on the placenta for gas exchange. After birth, the ductus arteriosus typically closes within the first few days of life, allowing for proper oxygenation of blood in the pulmonary circulation. Therefore, the correct answer is D, which states that the ductus arteriosus allows fetal blood to move from the pulmonary trunk into the aorta.

The Ductus Arteriosus Allows Fetal Blood to Move from the