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03/12/12 Lectures 3 and 4, Exam III Review notes and watch video before beginning: http://www.youtube.com/watch?v=08VyJOEcDos Digestion/ Absorption Discussion Digestive Structures: Stomach: Types of cells: Physical action creates: Small Intestine: Parts: Pancreas secretes: Liver creates and the gallbladder secretes: Structure and purpose, (villi): Large Intestine: Also called: Main two purposes: Two sphincters: Digestion, molecular level: Proteins digestion catalyzed by: Types: Begins: Pancreas secretes: Brush border secretes: Products: Carbohydrate digestion catalyzed by: Types: Begins: Pancreas secretes: Brush border secretes: Products: Lipid digestion catalyzed by: Occurs mainly: Products: Forms: Answer! 1. (True/ False) Most of the absorption in the digestive tract happens in the stomach. 2. (True/ False) Most digestion in the digestive tract occurs in the small intestine. 2. Where does protein digestion begin? 3. Where does carbohydrate digestion begin? 4. Where does lipid digestion begin? Absorption: Monosaccharides: From lumen to cell: From cell to blood: Amino acids: From lumen to cell: From cell to blood: Glycerol, fatty acids, and monoglycerides: