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Additional%20Digestive%20Slides-1

Additional%20Digestive%20Slides-1 - • mobility –...

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Digestive System Review oral cavity & esophagus stomach small intestine large intestine IPHY 3480
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Oral Cavity and Esophagus mobility chewing (mechanical digestion) swallowing & peristaltic transfer to stomach via esophagus secretion saliva (water, mucus, amylase, lipase) digestion starches via amylase (small amount of lipid) absorption none IPHY 3480
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Stomach mobility peristaltic mixing & controlled release of ‘chyme’ into the small intestine secretion HCL(parietal cells), pepsinogen & gastric lipase(chief cells), mucus & HCO 3 - (mucus cells), signaling proteins(gastrin, histamine) digestion starches via amylase (small amount of lipid) absorption lipid-soluble substances (alcohol,aspirin) IPHY 3480
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Small Intestine
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Unformatted text preview: • mobility – segmentation(mixing & propulsion; slow progressive movement) • secretion – brush border enzymes, pancreatic enzymes & HCO 3-, bile from liver, mucus from goblet cells • digestion – carbohydrates, fat, proteins IPHY 3480 Small Intestine • absorption – peptides, amino acids, glucose, fructose, galactose, fats, water, ions, minerals, vitamins – simple diffusion, active transport, secondary active transport, osmosis IPHY 3480 Large Intestine • mobility – segmental mixing & mass movements • secretion – mucus from goblet cells • digestion – none except for resident bacteria • absorption – ions, water, minerals, & vitamins (especially vitamin K) IPHY 3480...
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