A change from fetal circulation to adult circulation requires which of the following scenarios to occur

Question

Quizplus · Accepted Answer

Fetal circulation is characterized by low pulmonary vascular resistance and high systemic vascular resistance. This is because the placenta provides oxygenation for the fetus, allowing blood to bypass the lungs via the ductus arteriosus. However, after birth, the lungs take over oxygenation and the ductus arteriosus closes, leading to a decrease in pulmonary vascular resistance and an increase in systemic vascular resistance. This is the transition to adult circulation. Therefore, option B is the correct answer.

A Change from Fetal Circulation to Adult Circulation Requires Which