6533b7d1fe1ef96bd125d4c6
RESEARCH PRODUCT
Morphological assessment of the umbilical cord with three-dimensional ultrasonography
Newton G. OsborneL. E. MachadoFrancisco RagaFrancisco BonillaFernando Bonilla-musolesM.j. PuigF. Machadosubject
FetusCordbusiness.industryUmbilicus (mollusc)Connective tissueAnatomyPlacenta cord bankingUmbilical cordUmbilical veinmedicine.anatomical_structurePlacentaembryonic structuresmedicinebusinessreproductive and urinary physiologydescription
ABSTRACTThe long cylindrical cord covered by a layer of amnion that extends from the umbilicus of the fetus to the fetal surface of the placenta is known as the umbilical cord, or, in older medical textbooks, as funiculis umbilicalis. The two umbilical arteries extend as branches of the internal iliac arteries that emerge from the fetal body at the umbilicus, and run a helical course through the umbilical cord carrying venous blood to the placenta. In most normal placentas, the umbilical arteries anastomose within 2 cm of insertion into the placenta. The fetal umbilical vein emerges from the placenta and carries oxygenated blood to the fetus. The cord vessels are supported by a matrix of myxomatous connective tissue known as Wharton's jelly. The average length of the umbilical cord is approximately 55 cm at term, but extreme variations in length can occur for unknown reasons. The normal umbilical cord is spiralled. On rare occasions, remnants of the omphalomesenteric and allantoic ducts may be found in th...
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-01-01 | The Ultrasound Review of Obstetrics and Gynecology |