Umbilical vein
As umbilical vein ( umbilical vein ) is called a venous blood vessel which oxygenated blood from the placenta through the umbilical to the fetus leads.
The umbilical vein is initially created in pairs; however, the right umbilical vein recedes early, so that the left one (left umbilical vein ) takes over the function alone. It connects both with the left portal vein and via the ductus venosus (Arantii) with the inferior vena cava .
The left umbilical vein closes after birth to form a solid cord, the ligamentum teres hepatis ("round liver ligament "). In the first days of life, however, the left umbilical vein is a possible pathway for ascending umbilical infections with the formation of liver abscesses . In the case of portal hypertension (increased pressure in the flow area of the portal vein ), the blocked vessel can reopen and lead to the clinical picture of the head of the medus (veins around the umbilicus that are enlarged like varicose veins).
literature
- Bertram Schnorr, Monika Kressin: Embryology of Pets. 5th edition. Enke, Stuttgart 2006, ISBN 3-8304-1061-1 .
- Uwe Gille: Cardiovascular and immune system, Angiologia. In: Franz-Viktor Salomon et al. (Hrsg.): Anatomie für die Tiermedizin. Enke-Verlag, Stuttgart 2004, ISBN 3-8304-1007-7 , pp. 404-463.
Individual evidence
- ↑ Sandra L. Hagen-Ansert: Textbook of Diagnostic Sonography, Vol. 2 . Elsevier Mosby, St. Louis 2012, ISBN 978-0-323-07301-1 , p. 1239.
- ↑ Gerd Herold : Internal Medicine 2005. A lecture-oriented presentation . Self-published, Cologne 2005.