Vitelline duct
| Vitelline duct | |
|---|---|
Sketches in profile of two stages in the development of the human digestive tube. (Vitelline duct labeled on bottom image.) | |
| Details | |
| Days | 28 |
| Precursor | Midgut, yolk sac |
| Identifiers | |
| Latin | ductus vitellinus |
| MeSH | D014816 |
| 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. It appears at the end of the fourth week, when the yolk sac (also known as the umbilical vesicle) presents the appearance of a small pear-shaped vesicle.