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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Median umbilical ligament is derived from ?
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The correct answer is  Allantois is a vestigial structure and initially bladder is continuous with it. Most of the allantois soon constricts to form a thick fibrous cord called the urachus, which extends from the apex of bladder to the umbilicus. In the adults, the median umbilical ligament represents the urachus. Incomplete closure of urachus results in urachal cyst, sinus or fistula :i) Urachal cyst : Middle pa of allantois remains patent (proximal and distal pas are obliterated).ii) Urachal sinus : Patent inferior end of urachus dilate to form urachal sinus.iii) Urachal fistula : Entire urachus remains patent.