What makes up the median umbilical ligament?
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 does the medial umbilical ligament do?
The main function of the medial umbilical ligament in postnatal life is to provide support for the urinary bladder, together with the median umbilical ligament.
What is the median umbilical ligament?
Listen to pronunciation. (MEE-dee-un um-BIH-lih-kul LIH-guh-ment) A fibrous cord that connects the urinary bladder to the umbilicus (navel). The median umbilical ligament is formed as the allantoic stalk during fetal development and lasts through life.
How many umbilical ligaments does the medial have?
The medial umbilical ligaments are anatomical remnants of the obliterated foetal umbilical arteries. The folds are 2 of the 5 umbilical folds and should not be confused with the single midline median umbilical fold. The bilateral supravesical fossae lie between the median and bilateral medial umbilical folds.
What is an umbilical fold?
The umbilical folds are a series of 5 folds of parietal peritoneum on the deep surface of the anterior abdominal wall and consist of: a single midline median umbilical fold, bilateral medial umbilical folds, and. bilateral lateral umbilical folds.
What does the umbilical artery become after birth?
After birth, the proximal portions of the intra‐abdominal umbilical arteries become the internal iliac and superior vesical arteries, while the distal portions are obliterated and form the medial umbilical ligaments.
Where is the medial umbilical ligament?
anterior abdominal wall
Anatomical terminology The medial umbilical ligament (or cord of umbilical artery, or obliterated umbilical artery) is a paired structure found in human anatomy. It is on the deep surface of the anterior abdominal wall, and is covered by the medial umbilical folds (plicae umbilicales mediales).
What is umbilical fold?
Where is umbilical fold?
What happens to umbilical artery and vein after birth?
After birth, the proximal portions of the intra‐abdominal umbilical arteries become the internal iliac and superior vesical arteries, while the distal portions are obliterated and form the medial umbilical ligaments. The umbilical veins arise from a convergence of venules that drain the extra‐embryonic allantois.
How is the umbilical ligament related to the urachus?
The medial umbilical ligament is the aforementioned paired structure related to the umbilical arteries, while the median umbilical ligament contains the urachus: the remnants of an embryonic communication between the allantois and cloaca.
Where is the median umbilical ligament located during birth?
Loading images… Prominent median umbilical ligament. The urachus connects the dome of the bladder to the umbilical cord during fetal life and is located behind the abdominal wall and anterior to the peritoneum in the space of Retzius. By birth, the urachus is obliterated and becomes a vestigial structure known as the median umbilical ligament.
Where does the lumen of the urachus go after birth?
The lumen of the urachus usually obliterates after birth and it becomes the median umbilical ligament, a midline linear fibrous fold of parietal peritoneum, extending from the apex of the bladder to the umbilicus. If the lumen does not completely involute, a spectrum of urachal remnants may persist, including.
Where is the urachus located in the human body?
The urachus is the fibrous vestigial remnant of the fetal allantois. The lumen of the urachus usually obliterates after birth and it becomes the median umbilical ligament , a midline linear fibrous fold of parietal peritoneum , extending from the apex of the bladder to the umbilicus. It is located in the retropubic space.
