ANPS 020 Lecture Notes - Lecture 30: Porta Hepatis, Portal Vein, Portal Triad
15 Apr 2019
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Document Summary
The liver produces bile to assist with the digestion of fats in the duodenum. Primary digestive function is to produce bile: emulsify fats. Processes nutrient-rich venous blood from digestive organs. Other important functions: detox blood, produce plasma proteins. Porta hepatis = door of the liver is an important structure that enters and leaves the liver. Branch of the hepatic artery (oxygen-rich arterial blood) Branch of portal vein (oxygen low, nutrient-rich venous blood) The portal vein carries nutrient-rich blood into the liver. Small intestine enteroendocrine cells secrete cck & secretin which regulate bile and pancreatic secretions. Enterogastrone = intestinal hormone secreted by enteroendocrine cells. Cck = stimulated by proteins and fats in the chyme. Small intestine- main location of digestion and absorption. Duodenum (12 in): digestion, alkaline, & mucus secretions. Jejunum (8 ft): most absorption, suspended by mesentery. Ileum (12 ft): absorption of vitamin b12, bile salts, peyer"s patches. Circular folds: deep permanent folds in mucosa.
