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Urachus MeSH Descriptor Data 2025


MeSH Heading
Urachus
Tree Number(s)
A16.890
Unique ID
D014497
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D014497
Annotation
patent urachus: index under URACHUS /‌abnorm: do not confuse with URACHAL CYST
Scope Note
An embryonic structure originating from the ALLANTOIS. It is a canal connecting the fetal URINARY BLADDER and the UMBILICUS. It is normally converted into a fibrous cord postnatally. When the canal fails to be filled and remains open (patent urachus), urine leaks through the umbilicus.
NLM Classification #
WQ 210.5
Date Established
1966/01/01
Date of Entry
1999/01/01
Revision Date
2007/07/09
Urachus Preferred
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