It goes longitudinally to the abdominal wall and becomes the medial umbilical ligament
. When traction is applied to the umbilical artery during laparoscopic procedures, it will indicate the origin of the uterine artery.
Also called the median umbilical ligament
, the urachus is a vestigial remnant of two embryonic structures: the cloaca and the allantois .
They are pubocervical fascia, rectovaginal fascia, Waldeyer fascia, rectosacral fascia, mesorectum, paracolpium, pubourethral ligament, cardinal ligament, uterosacral ligament, and umbilical ligament
. The listed ligaments are the real condensations/thickening of the endopelvic fascia rather than true ligaments .
Generally, the urachus involutes after the third trimester and forms the medium umbilical ligament
. In about one-third of adults, however, urachal remnants persist as a tubular or cystic structure and may give rise to urachal carcinoma .
The supravesical fossa is the area of abdominal wall between remnant of urachus (Median umbilical ligament
) and remnant of left or right umbilical artery (medial umbilical ligament
Actually it was a thickened right umbilical ligament
. Ureter is a retopenitoneal structure crossing the common iliac vessels.
Access to the vesical pedicles and bladder was achieved through 2 windows on both sides; the first between the medial umbilical ligament
, round ligament and the pelvic side wall, and the second through the broad ligament inferior to the round ligament.
After birth, the greater part of intraabdominal portion of umbilical artery atrophies and is converted into medial umbilical ligament
but from the previous part in the pelvis springs the superior vesical artery.
This vestigial remnant, also known as the median umbilical ligament
, extends in the midline from the bladder apex to the umbilicus.
The persistent allantois communicating from the dome of the bladder to the umbilicus is the urachus, which ultimately undergoes apoptosis and gives rise to the median umbilical ligament
. Persistence of the urachus may be partial giving rise to urachal cysts, urachal diverticulum or sinus, or may be complete allowing communication with the bladder.
The umbilical ligament
is tied up to the diaphragm internally.
During normal development the urachus obliterates to form the median umbilical ligament
at around 32 weeks' gestation.