What is the median umbilical ligament a remnant of?

urachus
The median umbilical ligament is a fibrous band located in the anterior portion of the abdomen, anterior to the urinary bladder. It contains the urachus, which is an embryonic remnant resulting from involution of the allantoic duct that connects the fetal urinary bladder to the umbilicus.

What is the umbilical ligament a remnant of?

It is a fibrous piece of tissue that represents the remnant of the fetal urachus. Lateral to this structure are the medial umbilical ligament and the lateral umbilical ligament.

What is remnant urachus?

The urachus is a remnant of a channel between the bladder and the umbilicus (belly button) where urine initially drains in the fetus during the 1st trimester of pregnancy.

What causes urachal remnant?

In the first trimester of pregnancy, the urachus is a channel between the fetus’s bladder and umbilical cord that allows urine to drain from the fetus. By the third trimester, the urachal channel seals off and becomes the medial umbilical ligament. If the structure remains open, a urachal cyst can result.

Is urachus the same as Allantois?

The urachus is a fibrous remnant of the allantois, a canal that drains the urinary bladder of the fetus that joins and runs within the umbilical cord. The fibrous remnant lies in the space of Retzius, between the transverse fascia anteriorly and the peritoneum posteriorly.

What does the urachus do?

The urachus is a canal that exists when the fetus is developing before birth. This canal runs from the bladder of the fetus to the belly button (umbilicus). It drains the urinary bladder of the fetus.

Where is the median umbilical fold?

The median umbilical fold is a raised ridge of parietal peritoneum in the deep aspect of the anterior abdominal wall overlying the median umbilical ligament (urachal remnant). It is seen to lie between the transversalis fascia and peritoneum.

What is urachal remnant in child?

This channel normally closes up as the fetus grows. However, when it doesn’t close fully, and the baby is born with part or all of it open, it’s called a urachal remnant. This is a rare condition and it can lead to health problems. A urachal remnant tends to be more common in males than it is in females.

Do Urachal remnants need to be removed?

In many cases, the medical team may recommend surgery to remove the remnant because of the possibility of complications and because it is associated with a rare, but aggressive form of cancer. In most cases the anomaly can be removed and recovery is uneventful.

What is the difference between the urachus and allantois?

The urachus is a fibrous remnant of the allantois. The allantois is a canal that drains the urinary bladder of the fetus and runs within the umbilical cord. The urachus is a band of fibrous tissue extending from the dome of the bladder to the umbilical cord.

When does the urachus become the median umbilical ligament?

During normal gestational development, the urachus involutes and its lumen is obliterated, becoming the median umbilical ligament ( 1 ).

What is the urachus of the bladder?

The urachus is a midline tubular structure that stretches from the apex of the bladder and connects to the umbilicus. Also called the median umbilical ligament, the urachus is a vestigial remnant of two embryonic structures: the cloaca and the allantois [ 1

What are urachal remnants?

Urachal Remnants. (1) Pediatric Surgery, AlSadik Hospital, Qatif, Saudi Arabia. The urachus is a fibrous remnant of the allantois. The allantois is a canal that drains the urinary bladder of the fetus and runs within the umbilical cord. The urachus is a band of fibrous tissue extending from the dome of the bladder to the umbilical cord.