| Vein: Ductus venosus | |
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| Fetal circulation. The ductus venosus (red) connects the umbilical vein to the inferior vena cava. The umbilical vein is a Blood vessel present during fetal development that carries Oxygenated Blood from the Placenta to the growing Fetus The inferior vena cava (or IVC is the large Vein that carries de-oxygenated Blood from the lower half of the body into the Heart. | |
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| The liver and the veins in connection with it, of a human embryo, twenty-four or twenty-five days old, as seen from the ventral surface. | |
| Gray's | subject #139 540 |
| Source | umbilical vein |
| Drains to | inferior vena cava |
| Artery | ductus arteriosus |
| Dorlands / Elsevier |
d_29/12315175 |
In the fetus, the ductus venosus shunts a significant majority (80%) of the blood flow of the umbilical vein directly to the inferior vena cava. The umbilical vein is a Blood vessel present during fetal development that carries Oxygenated Blood from the Placenta to the growing Fetus The inferior vena cava (or IVC is the large Vein that carries de-oxygenated Blood from the lower half of the body into the Heart. In the developing Fetus, the ductus arteriosus ( DA) is a shunt connecting the Pulmonary artery to the aortic arch that allows most Elsevier, the world's largest Publisher of Medical and Scientific literature, forms part of the Reed Elsevier group A fetus (or foetus or fœtus) is a developing Mammal or other Viviparous Vertebrate, after the Embryonic stage and The umbilical vein is a Blood vessel present during fetal development that carries Oxygenated Blood from the Placenta to the growing Fetus The inferior vena cava (or IVC is the large Vein that carries de-oxygenated Blood from the lower half of the body into the Heart. Thus, it allows oxygenated blood from the placenta to bypass the liver. The placenta is an Ephemeral organ present in placental Vertebrates, such as Eutherial Mammals and Sharks during Gestation The liver is a vital organ in the human body and is present in Vertebrates and some other animals In conjunction with the other fetal shunts, the foramen ovale and ductus arteriosus, it plays a critical role in preferentially shunting oxygenated blood to the fetal brain. In the developing Fetus, the ductus arteriosus ( DA) is a shunt connecting the Pulmonary artery to the aortic arch that allows most
The ductus venosus is open at the time of the birth and is the reason why umbilical vein catheterization works. Ductus venosus naturally closes during the first week of life in most full-term neonates; however, it may take much longer to close in pre-term neonates. Functional closure occurs within minutes of birth. Structural closure in term babies occurs within 3 to 7 days.
After it closes, the remnant is known as ligamentum venosum. The ligamentum venosum is the fibrous remnant of the Ductus venosus of the Fetal circulation.
If the ductus venosus fails to occlude after birth, the individual is said to have an intrahepatic portosystemic shunt (PSS). A portosystemic shunt (PSS, also known as a liver shunt, is a bypass of the Liver by the body's Circulatory system. This condition is hereditary in some dog breeds (e. g. Irish Wolfhound).
See also
External links
- 678101050 at GPnotebook - Ductus venosus (embryology)
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