urachus
n.
portion of the allantoic stalk between the apex of the bladder and the umbilicus
Urachus
The urachus is an embryological canal connecting the
urinary bladder of the fetus with the
allantois, a structure that contributes to the formation of the umbilical cord. The lumen (inside) of the urachus is normally obliterated during embryonic development, transforming the urachus into a solid cord, a functionless remnant.
See more at Wikipedia.org...
Urachus
(n.)
A cord or band of fibrous tissue extending from the bladder to the umbilicus.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
About
urachus
[YOU-rah-kus]
A fibrous cord that connects the urinary bladder to the umbilicus (navel). The urachus is formed as the allantoic stalk during fetal development and lasts through life. Also called the median umbilical ligament.
urachus