NS115 Lecture 5 - 9/9/09 Lecture 5: small intestine Vagus...

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9/9/09 Lecture 5: small intestine Vagus Nerve Esophageal sphincter: 1. modulated by parasympathetic 9/14/09 Lecture 7: colon Format Email subject line: Starkova, Irina – NS1150 Assignment#1 File name: Starkova, I, assignment#1 Saccharidases: enzymes that break down disaccharides; located on outside surface of cells that line the microvilli 1. Maltase: splits maltose to glucose 2. Secrase: splits sucrose into flucose and fructore 3. Lactase: splits lactose into galactose and glucose; if lactase is not present, lactose intolerant Lactose = major sugar in mother’s milk Carbohydrates: 1. Monosaccharides 2. disaccharides 3. polysaccharides a. starch (salivary amylase, pancreatic amylase, b. fiber c. glycogen – storage form of glucose Protein: enzymes that digest protein Stomach: pepsin, pancreatic proteases Starch disaccharides monosaccharides glucose in blood portal Proteins amino acids amino acids in blood portal Fats: triglycerides Lingual lipase Gastric lipase CCK is stimulated by fatty acids Bile (gall blader) Pancreatic lipase
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NS115 Lecture 5 - 9/9/09 Lecture 5: small intestine Vagus...

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