Bio 260 Digestive System part 3

Bio 260 Digestive System part 3 - DIGESTION AND ABSORPTION...

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DIGESTION AND ABSORPTION (Trip 3)
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Big Picture 1. Mechanical digestion of food: chewing 2. Small particles can now be swallowed 3. Small particles contain nutrients: fats, carbohydrates, proteins 1. Enzymes break down nutrients so they can be absorbed: via hydrolysis
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What you consume vs what is absorbed Carbohydrates consumed: starch glucose lactose glucose and galactose sucrose glucose and fructose maltose glucose and glucose Proteins amino acids, di- and tri peptides Triglycerides fatty acids and monoglycerides Now the Details…
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Mouth Carbohydrates salivary amylase Starch 1. limit dextrans branched 2. maltotriose 3. maltose
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Stomach Amylase digests carbo’s but is inactivated by acid Protein digestion begins here Proteins small peptide fragments and some aa’s. Trypsin breaks proteins between tyrosine and phenylalnine amino acids Pepsin denatured when in duodenum
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Most Digestion and Absorption Occurs in the Small Intestine Cellulose Soluble vs insoluble fiber
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This note was uploaded on 06/20/2011 for the course BIOL 260 taught by Professor Martino during the Spring '10 term at Carthage.

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Bio 260 Digestive System part 3 - DIGESTION AND ABSORPTION...

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