April 14 - 3 digestive accessory structures associated with...

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April 14, 2008 3 digestive accessory structures associated with the duodenum 1. Liver – the digestive function Production of bile – 500 to 1000 mL/day pH = 8.0 Yellowish green solution containing: Bile salts = cholic acid, chenodeoxycholic acid – emulsification of fats Bile pigments = bilirubin (by product of heme degradation) Cholesterol Triglycerides Phospholipids (used in micelle formation) Bile is transported out of the liver by the hepatic ducts – unite to form the common hepatic duct – transports bile to the gallbladder 2. Gallbladder – a greenish muscular sac located on the ventral surface of the liver Function: stores and concentrates bile. Bile released from the bladder is 10X more contrated than bile released directly from the liver Bile is released from the bladder via the cystic duct – unites with the common hepatic duct to form the common bile duct 3. Pancreas – is a mixed gland Exocrine pancreas – produces the pancreatic juice pH = 8.0 1000-1500 mL/day Composition of pancreatic juice: H2O HCO3- Enzymes – 3 types of enzymes o Pancreatic amylase o Pancreatic lipase o
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