5_Digest_disorders_10

5_Digest_disorders_10 - BIOL 103 Human Biology The Immortal...

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BIOL 103 Human Biology
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http://www.smithsonianmag.com/science-na The Immortal Life of He nrietta La cks
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New York Times, 2 Feb. 2010 Henrietta Lacks, was a poor and largely illiterate Virginia tobacco farmer, the great- great-granddaughter of slaves. Born in 1920, she died from an aggressive cervical cancer at 31, leaving behind five children. No obituaries of Mrs. Lacks appeared in newspapers. She was buried in an unmarked grave.
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: - some or all of it may be absorbed by the body - more expensive - takes longer - cells not rejected (positive)
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Testing your knowledge of the concepts: Page 18 (Ch. 1): Questions: 13-17 Pages 63-60 (Ch. 3): Questions: 13-17, 22-24, 26, 27 Page 42 (Ch. 2): Questions: 20-25 Pages 89 & 90 (Ch. 4): Questions: 12-20 Pages 183-184 (Ch. 8): Questions: 9-21, 27, 29 Answers: Pages A-1 to A-4
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Supplemental Instruction Sessions Thursday 7-8, Milne 105, Gauri Sunday 6-7, Milne 109, Office Hours M&F 2:00-3:00, Blake C 211, Gauri T&R 10:00-11:00, Blake C 210, Joanne
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68% 77% 78% 83%
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70% 74% 77% 82%
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Digestion
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throat (pharynx) small intestine stomach esophagus c.s .
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Small intestine Small intestine (long) about one inch in diameter, about 20 feet long in cadaver. Duodenum (25 cm or 9.8 inches) receives pancreatic secretions through the sphincter of Oddi (hepatopancreatic valve) which contain s digestive enzymes -- amylase , proteases (chymotrypsin, trypsin and carboxypeptidase) and lipase sodium bicarbonate -- helps neutralize the low pH of chyme
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Small intestine D J I about 10 inches long
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pancreas, dumps into first part of small intestine end of small intestine
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pancreas D common bile duct D J pancreatic duct
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duodenum (cont.) receives bile (from liver to gallbladder via common bile duct) which emulsifies lipids Gallbladder concentrates and stores bile. Contraction of the gall bladder releases bile through sphincter of Oddi into the duodenum . The pigment bilirubin gives bile its greenish color.
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liver bile gall- bladder
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gallstones
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Gallstones -- hard lumps of cholesterol
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duodenum (cont.) Duodenum generates intestinal enzymes (maltase , sucrase , lactase , aminopeptidase ) for final phase of digestion just before absorption into absorptive cells.
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Small intestine D J I
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fat bile lymphatic system Lipid digestion and absorption “milky” (lipase) L lymph E
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cardiovascular system glucose Carbohydrate digestion and absorption (maltase) (amylase)
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Protein digestion and absorption cardiovascular system (peptidase) (trypsin)
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carbohydrate protein fat maltose
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Small intestine (cont.) jejunum -- middle part of the small intestine ileum -- last part
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Functions of the small intestine -- most of food digestion and absorption of raw materials (nutrients) modifications for absorption
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5_Digest_disorders_10 - BIOL 103 Human Biology The Immortal...

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