A bridge of mesoderm connecting the caudal end of the young embryo with the trophoblastic tissues; the precursor of the umbilical cord. [ http://medical-dictionary.thefreedictionary.com/ ]
术语信息-
- BTO:0004705
- UMLS:C1516792 (ncithesaurus:Connecting_Stalk)
- NCIT:C34132
A bridge of mesoderm connecting the caudal end of the young embryo with the trophoblastic tissues; the precursor of the umbilical cord.
TODO - this is currently defined as a bridge of mesoderm, but in EHDAA2 is extraembryonic structure split into mesoderm and blood vessels