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Portal Venous System

QuestionAnswer
Portal system develops from ? Vitelline veins
Portal pressure is approximately? 5-10 mmHg
Blood flow in portal system is ? 1000-1200 mls/min
Portal system has anastomosis with cabal blood at ? Lower oesophagus, umbilicus and anal canal
Portal vein is formed by ? Splenic vein and Superior mesenteric vein at level of L2
What is the length of the portal vein ? 8cm long or 3.2 inches
Portal vein divides into right and left at ? Portal hepatis
What are the relations of the portal vein ? Anteriorly - Neck of pancreas First part of duodenum Hepatic artery Bile duct Posteriorly - Inferior venae caval IVC
Splenic vein receives from the ? Short gastric, gastro-epiploic , and pancreatic veins
Left gastric vein has anastomosis with ? Oesophageal veins of the azygous
Paraumbilical veins are found in the ? Falciform ligament
Portal venous system carries what blood ? Deoxygenated blood
Portal venous system constitutes about what percent of hepatic blood flow ? 75%
Which has a higher blood pressure Portal system or IVC ? Portal system maintains higher blood pressure
Superior rectal vein anastomose with ? Middle and inferior rectal vein
Paraumbilical veins anastomose with ? Radicles of the epigastric ( superior and inferior) veins
Retro peritoneal veins drain the ? Colon
Enlargement and swelling of anal veins ? Haemorroids
Increase beyond 10mmHg Portal hypertension
Causes of portal hypertension Pre hepatic Hepatic Post hepatic
Created by: acidd
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