What is vitello intestinal duct?
Anatomical terminology. In the human embryo, the vitelline duct, also known as the vitellointestinal duct, the yolk stalk, the omphaloenteric duct, or the omphalomesenteric duct, is a long narrow tube that joins the yolk sac to the midgut lumen of the developing fetus.
What is the function of vitelline duct?
The vitelline duct (VD) is an embryonic structure providing communication from the yolk sac to the midgut during fetal development [1]. Normally, it obliterates spontaneously and separates from the intestine between approximately the 5th and 9th weeks of gestation [2].
How is vitelline duct formed?
A constriction in the yolk sac encloses a small part of yolk sac within the embryo, forming the primitive digestive tube. Connection of the yolk sac to the embryonic digestive system is gradually reduced to a small tube called the vitelline duct (sometimes called the umbilical vesicle).
What is patent omphalomesenteric duct?
IN THE early human embryo the alimentary canal communicates freely with the yolk sac. This channel is known as the omphalomesenteric duct and is also referred to as the vitellointestinal duct. The embryology is well described by Cullen.
What is a Omphalomesenteric cyst?
Disease definition. A rare non-syndromic diaphragmatic or abdominal wall malformation, a remnant of omphalomesenteric duct, characterized by cuboidal or columnar epithelium with gastrointestinal differentiation.
What is umbilical adenoma?
An umbilical adenoma is a patch of vitellointestinal epithelium left behind when the vitellointestinal duct closed. It may form in a deep sinus in the depths of the umbilicus, but commonly protrudes to from it like a raspberry. The mother complains that the baby has a lump at the umbilicus and a mucous discharge.
What is the definition of vitelline?
Definition of vitelline 1 : resembling the yolk of an egg especially in yellow color. 2 : of, relating to, or producing yolk.
What is umbilical polyp?
An umbilical polyp is a congenital lesion resulting from an intestinal mucosal remnant at the umbilicus. [1] Other anomalies involving the umbilicus include umbilical sinus, umbilical mucosal polyp and cysts within a persistent fibrous cord.
What is Allantoic cyst?
Allantoic cyst is a rare swelling formed at the base of umbilicus associated with a patent urachus which results from an allantoic remnant. Paediatricians need to be aware about this condition as investigation is required to differentiate allantois cysts from umbilical pseudocysts.
What is Urachal cyst?
A urachal cyst is a sac-like pocket of tissue that develops in the urachus, a primitive structure that connects the umbilical cord to the bladder in the developing baby. Although it normally disappears prior to birth, part of the urachus may remain in some people.
What are vitelline vessels?
The vitelline veins are developmental vessels passing between the yolk sac and the sinus venosus of the heart. There are two key vessels, the right and left vitelline veins, which pass cephalically throught the septum transversum and in close proximity to the duodenum.
What is the function of the vitelline duct?
[edit on Wikidata] In the human embryo, the vitelline duct, also known as the vitellointestinal duct, the yolk stalk, the omphaloenteric duct, or the omphalomesenteric duct, is a long narrow tube that joins the yolk sac to the midgut lumen of the developing fetus.
Is the lumen of the vitellointestinal duct patent?
In the case with faecal umbilical fistula, the lumen of the whole of vitellointestinal duct was patent. Cutaneous remnants of the vitellointestinal duct: a clinicopathological study of 19 cases. Medical browser?
What is a vitelline fistula?
Other anomalies include a vitelline fistula, which occurs when the vitelline duct remains patent, forming a direct connection between the umbilicus and the ileum. This may result in seepage of bilious intestinal contents from the umbilicus.
When is the vitelline duct obliterated during pregnancy?
During the eighth week of gestation, the vitelline duct is normally obliterated as the placenta replaces the yolk sac as the primary source for fetal nutrition.7 A Meckel’s diverticulum develops when incomplete obliteration of the vitelline duct occurs between the fifth and seventh week of gestation.