Gynaecology & Obstetrics Ligamentum teres is formed after : A Obliteration of the umbilical vein B Obliteration of the ductus venous C Obliteration of the ductus aeriosus D Obliteration of the hypogastric aery 💡 Explanation Ligamentum teres is formed after : ✓ Correct Answer: A. Obliteration of the umbilical vein