Watch this video if you want to learn about the fate of allantois, vitelline duct and connecting stalk and all the anomalies related to it. Timeline: 0:00 - Allantois and its fate 2:57 - Anomalies of urachus 3:53 - Fate of vitello-intestinal duct 4:50 - Anomalies of vitelline duct 5:34 - Connecting stalk and its fate 7:16 - Anomalies related to umbilical cord