Urachus: A canal connecting the 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. Fa...
Found op http://www.medterms.com/script/main/art.html?articlekey=13997
<anatomy> A cord or band of fibrous tissue extending from the bladder to the umbilicus. ... Origin: NL, fr. Gr. Urine + to hold. ... Source: Websters Dictionary ... (01 Mar 1998) ...
Found op http://www.mondofacto.com/facts/dictionary?urachus
(u´rә-kәs) a fetal canal connecting the bladder with the allantois, persisting throughout life as a cord (median umbilical ligament). adj., u´rachal., adj. patent urachus a condition in which the urachus remains a hollow tube connecting the bladder and the umbil...
Found op http://www.encyclo.co.uk/local/21001
• (n.) A cord or band of fibrous tissue extending from the bladder to the umbilicus.
Found op http://thinkexist.com/dictionary/meaning/urachus/
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 transversalis fascia anteriorly and the peritoneum posteriorly. ==Formation== The ves...
Found op http://en.wikipedia.org/wiki/Urachus
Type: Term Pronunciation: yūr′ă-kŭs Definitions: 1. That part of the allantois between the apex of the bladder and the umbilicus; postnatally, the urachus is normally merely a fibrous cord, the median umbilical ligament, but occasionally the allantoic lumen may persist as a urac...
Found op http://www.medilexicon.com/medicaldictionary.php?t=95808
Structure that during fetal life transports the foal's urine into the placental fluids; it normally closes off after birth.
Found op http://www.thehorse.com/Glossary.xhtml?L=U
Greek ouron = urine, and echein = to hold, hence the canal connecting the bladder and umbilicus in the foetus.
Found op http://www.anatomy.usyd.edu.au/glossary/glossary.cgi?
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 median umbilical ligament.
Found op http://www.cancer.gov/dictionary?expand=U
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