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foramen ovale and ductus arteriosus
🔴 In fetal development, the lungs are not yet functional, so the circulatory system has special adaptations to bypass them.
🔴 The foramen ovale is an opening between the right and left atria that allows blood to flow directly into the left atrium, bypassing the pulmonary circuit.
🔴 The ductus arteriosus connects the pulmonary artery to the aorta, further diverting blood away from the non-functioning fetal lungs.
🔴 These shunts ensure that oxygen-rich blood from the placenta is efficiently delivered to the fetal tissues.
🔴 Thus, in fetal circulation, blood bypasses the lungs through the foramen ovale and ductus arteriosus.
This question is from Anatomy and physiology ( hellen fuld college) which contains 89 questions.
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