BIO 212 Lecture Notes - Summer 2018 Lecture 9 - Hepatocyte, Brush border, Defecation
20 Sep 2018
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Document Summary
Action potentials are fired if the membrane potential reaches threshold as a result of a slow wave. Saliva is hypotonic and is produced by a two-step process involving formation of an initial saliva by acinar cells and its modification by ductal epithelial cells: pancreatic secretion contains. H+ from the stomach and enzymes for digestion of carbohydrates, proteins, and lipids. Pancreatic juice is isotonic and is produced by a two-step process. The acinar cells secrete the enzymatic component, centroacinar and ductal epithelial cells secrete the aqueous. Containing component, and ductal: bile salts, the major constituents of bile, are used for emulsification and solubilization of lipids, aiding in their digestion and absorption. Bile is produced by hepatocytes, stored in the gallbladder, and secreted into the intestine when the gallbladder contracts. Bile salts solubilize and form micelles with the products of lipid digestion.
