The urachus forms from the distal end of the allantois in the embryo, and develops into a closed cord between the base of the bladder, and the navel. It drains the 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. At birth, the urachus develops into the median umbilical ligament.
Key facts
- Embryology.Name
- Urachus
- Embryology.Image
- Gray1156.png
- Embryology.Caption
- Vertical section of bladder, penis, and urethra. Urachus is seen at top
- Embryology.Image2
- Illu quiz bladder 01.jpg
- Embryology.Caption2
- Urachus is #1
via Wikipedia infobox
Research
1,807 papers- Imaging of the Urachus.Radiographics : a review publication of the Radiological Society of North America, Inc · 2025
- Metastatic Urachus Neoplasia: A Case Report and Review of the Current Literature.Clinical genitourinary cancer · 2019
- Prenatally Ruptured Patent Urachus: A Case Report and Review of Literature.Medicina (Kaunas, Lithuania) · 2022
- Inflammatory Pseudotumour Of The Urachus: Case Report And Literature Review.JPMA. The Journal of the Pakistan Medical Association · 2023
- Patent urachus with bladder eversion.Journal of pediatric surgery · 2003
via PubMed
Wikidata facts
- Image
- Ultrasound Scan ND 111702 1121450 cr.png
Show 2 more facts
- Commons category
- Urachus
- different from
- vitelline duct
via Wikidata · CC0
Article · 日本語
尿膜管（にょうまくかん、urachus）は、胎児の膀胱からの排出経路で臍帯につながっている尿膜 (allantois) が、出生後、索状に残存したもの。この索状の残存物は、より前、腹膜より後ろの、 (Retropubic space) にある。
Abstract from DBpedia / Wikipedia · CC BY-SA