Umbilical vein

The umbilical vein is a vein present during fetal development that carries oxygenated blood from the placenta into the growing fetus.

Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart.

The umbilical vein is a vein present during fetal development that carries oxygenated blood from the placenta into the growing fetus.

It connects to the fetus by an umbilical cord of approximately 55–60 cm (22–24 inch) in length, which contains two umbilical arteries and one umbilical vein.

More than two-thirds of fetal hepatic circulation is via the main portal vein, while the remainder is shunted from the left portal vein via the ductus venosus to the inferior vena cava, eventually being delivered to the fetal right atrium.

In the fetus, the ductus venosus (Arantius' duct after Julius Caesar Aranzi ) shunts a portion of umbilical vein blood flow directly to the inferior vena cava.

The unpaired umbilical vein carries oxygen and nutrient rich blood derived from fetal-maternal blood exchange at the chorionic villi.

After circulating through the capillaries of the villi, blood returns to the embryo through the umbilical vein.

The umbilical vein is a vein present during fetal development that carries oxygenated blood from the placenta into the growing fetus.

Blood from the placenta is carried to the fetus by the umbilical vein.

In portal hypertension, the vessels surrounding the liver are subjected to abnormally high blood pressure—so high, in fact, that the force of the blood pressing against the round ligament is sufficient to recanalize the structure.

The left umbilical vein becomes the ductus venosus and the right vitelline vein becomes the portal vein.

It extends from the umbilicus to the transverse fissure, where it joins with the falciform ligament of the liver to separate segment 4 from segments 2 and 3 of the left hepatic lobe.

The umbilical vein of the fetus gives rise to the round ligament of liver in the adult, which is found in the free border of the falciform ligament.

Blood from the placenta is carried to the fetus by the umbilical vein.

Within a week of birth, the neonate's umbilical vein is completely obliterated and is replaced by a fibrous cord called the round ligament of the liver (also called ligamentum teres hepatis).

Closure of the umbilical vein usually occurs after the umbilical arteries have closed.

There are usually two umbilical arteries present together with one umbilical vein in the umbilical cord.

The umbilical vein is a vein present during fetal development that carries oxygenated blood from the placenta into the growing fetus.

This prolongs the communication between the placenta and fetal heart, allowing for a sort of autotransfusion of remaining blood from the placenta to the fetus.

It extends from the umbilicus to the transverse fissure, where it joins with the falciform ligament of the liver to separate segment 4 from segments 2 and 3 of the left hepatic lobe.

Under extreme pressure, the round ligament may reopen to allow the passage of blood.

Such recanalization may be evident in patients with cirrhosis and portal hypertension.

Such recanalization may be evident in patients with cirrhosis and portal hypertension.

Patients with cirrhosis experience rapid growth of scar tissue in and around the liver, often functionally obstructing nearby vessels.

This leads to a condition called Caput medusae.

It may be used as a site for regular transfusion in cases of erythroblastosis or hemolytic disease.

It may be used as a site for regular transfusion in cases of erythroblastosis or hemolytic disease.