Blood supply of liver Flashcards
How much of the blood is supplied by the hepatic artery to liver?
25%
provides mostly non paranchymeal structures
What provides the majority of the blood to the liver?
hepatic portal vein
has 40% oxygenated blood
What forms the hepatic portal vein?
from the superior mesenteric and splenic veins
ascends to liver in the hepatodudoneal ligament
Where is the beginning of the hepatic portal vein?
starts posterior to the neck of the pancreas from the superior mesenteric and splenic veins
What does the right hepatic vein drain?
5-8
crosses between anterior and posterior segments portal vein
What does the left hepatic vein drain?
2-3
cross between 2&3 segments portal vein
What does the middle hepatic vein drain?
4,5,8
passes between right anterior and left portal veins
forms common trunk with LHV before entering the IVC
What does the portal vein drain?
the stomach, pancreas, spleen, small intestine, and majority of the colon to the liver before returning to the systemic circulation.
75% of blood to the liver is supplied by this vein.
What is the gasroesophageal anastomoses of the portosystem?
(between the left gastric/esophageal veins/azygos vein)
What is the Anorectal anastomoses of the portosytem?
between the superior rectal vein/middle and inferior rectal veins)
What is the paraumbilical anastomose of the portosystem?
(between the paraumbilical veins/superficial epigastric vein)
What is the retroperitoneal anastomoses of the portosystem?
(between the colic veins/retroperitoneal veins)
What are the anastomoses of the portosystem?
gastroesophageal
anorectal
paraumbilical
retroperitoneal
What is the triangle of Calot (hepatocystic Triangle?
hepatic duct
cystic duct
liver margin
Cystic artery runs through it
