What Is an Intravenous Catheter?

Venous duct

Venous catheter

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Chinese name

Venous catheter

Foreign name

venous duct

Alias

Aranti venous catheter

Meaning

Veins that are connected to the liver during lactation

Venous duct

This is the ductus venosus Aran-tii. It is a vein created during the mammalian fetus when it is connected to the liver. After the family sac or placenta develops, a portion of the blood from the allantoic or placenta passes from the allantoic vein, or umbilicalvein, through this venous catheter to directly enter the posterior large (or inferior vena cava) vein. The rest of the blood does not pass through the venous catheter, but merges with the posterior large (or inferior vena cava) vein through the hepatic portal vein. Venous catheters increase with the development of the allantoic and placenta. However, after the fetus is born, the venous catheters degenerate as the allantoic and placental functions disappear. In bird embryos, organs equivalent to venous catheters are also called venous catheters.