Gynaecology & Obstetrics Which of these changes in fetal circulation happen immediately at bih? A Obliteration of ductus venosus B Formation of ligamentum teres C Functional closure of ductus aeriosus D Obliteration of distal hypogastric aeries 💡 Explanation Which of these changes in fetal circulation happen immediately at bih? ✓ Correct Answer: C. Functional closure of ductus aeriosus