Vitelline Duct

**Introduction**

The vitelline duct is a relatively short tube that connects the fetal yolk sac and its intestines. It represents one of the main components of the development of the digestive system of the fetal embryo. The vitelline duct in its shortest form plays an important role in the absorption of nutrients delivered by the yolk and the intestinal villi juice flowing through it. In addition, this embryonic organ also ensures the growth, morphological and histological development of the intestinal tube, especially the intestine and liver. The importance of the bile duct and its connections with other organs of the gastrointestinal tract in the physical development of the fetus and the regulation of nutrition in the first year of life is obvious from the anatomical and embryological information described previously.

**Purpose of the vitelline duct**

The duct between the yolk sac and the intestine has two functions: both as a circulatory system in development and in the passage of food through the intestinal wall. Due to this, the ducts between the yolk sac and the vitelline duct are connected to bile secreted by the liver.

The gastrointestinal part of the developing embryo meets the so-called vitelline part. The vitelline epithelium of the yolk sac is a kind of trophic catalyst. Once the yolk sac in the placenta is more or less cleared of non-nutritive yolk, it joins the fetal intestines. The child receives nutrition from intestinal juices. These juices come from the common gall tree of the child and go into the intestines directly through the chyle. Between the abdomen and the digestive tract there is a small opening, a canal, connecting these two tracts, and this opening is called the vitelline canal. The opening is approximately 70mm on land and 65mm behind the ridge