vitelline duct การใช้

• It causes damage of the integument and vitelline duct.
• In the fetus the ileum is connected to the navel by the vitelline duct.
• Each worm has reproductive organs such as vas deferens, testis, uterus, vitelline duct, ovary, and vitellaria.
• As the vitelline duct is made up of pluripotent cell lining, Meckel s diverticulum may harbor abnormal tissues, containing embryonic remnants of other tissue types.
• Progressive expansion of the amnion from the umbilical ring ( surrounding the roots of the vitelline duct and connecting stalk ) creates a tube of amniotic membrane.
• At the end of the fourth week the yolk sac presents the appearance of a small pear-shaped opening ( traditionally called the " umbilical vesicle " ), into the digestive tube by a long narrow tube, the vitelline duct.
• A "'Meckel's diverticulum "', a true congenital diverticulum, is a slight bulge in the small intestine present at birth and a vestigial remnant of the omphalomesenteric duct ( also called the vitelline duct or yolk stalk ).
• Proposed mechanisms for the spread of cancer cells to the umbilicus include direct transperitoneal spread, via the lymphatics which run alongside the obliterated umbilical vein, hematogenous spread, or via remnant structures such as the falciform ligament, median umbilical ligament, or a remnant of the vitelline duct.