the umbilical vein enters the circulation of the fetus at the fetal right atrium.
the umbilical vein enters the circulation of the fetus at the fetal right atrium.
where does the umbilical vein enter the circulation of the fetus?
the fetal right atrium
blood from the placenta is carried to the fetus by the umbilical vein. about half of this enters the fetal "ductus venosus" and is carried to the inferior vena cava, while the other half enters the liver proper from the inferior border of the liver. the branch of the umbilical vein that supplies the right lobe of the liver first joins with the portal vein. the blood then moves to the right atrium of the heart. in the fetus, there is an opening between the right and left atrium (the "foramen ovale"), and most of the blood flows from the right into the left atrium, thus bypassing pulmonary circulation. the majority of blood flow is into the left ventricle from where it is pumped through the aorta into the body. some of the blood moves from the aorta through the internal iliac arteries to the umbilical arteries, and re-enters the placenta, where carbon dioxide and other waste products from the fetus are taken up and enter the woman's circulation.
fetus
umbilical vein









































the umbilical vein is a vein present during fetal development that carries oxygenated blood from the placenta into the growing fetus. the umbilical vein provides convenient access to the central circulation of a neonate for restoration of blood volume and for administration of glucose and drugs.









































the blood pressure inside the umbilical vein is approximately 20 mmhg.









































section::::fetal circulation.
umbilical vein