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Tempkin Ch 12
Portal Venous System
| Term | Definition |
|---|---|
| Main Portal Vein | formed by the union of the splenic vein and superior mesenteric vein posterior to the neck of the pancreas. Along with its tributaries, it delivers blood from the spleen and gastrointestional tract to the liver for metabolism and detoxification. divides i |
| Hilum | area of entrance and exit for vessels, ducts, and nerves; also called hilus |
| Left Portal Vein | the left branch of the main portal vein. courses to the left and branches into medial and lateral subdivisions that give off multiple subdivisions |
| Right Portal Vein | the right branch of the main portal vein. courses to the right and branches into anterior and posterior subdivisions that give off multiple divisions |
| Splenic Vein | drains the spleen and courses from lateral to medial directly posterior to the tail, body and neck of the pancreas, where it unties with the superior mesenteric vein to form the portal vein |
| Superior Mesenteric vein | courses from inferior to superior and drains the small intestines and portions of the large intestines via several smaller branches. unites with the splenic vein posterior to the neck of the pancreas to form the portal vein |
| Intrahepatic | completely enclosed by liver tissue |
| Portal Triad | composed of hepatic arteries and bile ducts that run alongside portal veins in triads surrounded by a sheath of connective tissue. the triads radiate throughout the liver. |