13) GI Tract [2]

13) GI Tract [2] - Integument-skin Integument -epidermis...

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Integument -epidermis -dermis -hypodermis -epidermal derivatives -hair -glands -nails Integument-skin
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Gastro Intestinal system -9 meters long -four distinct functional segments oesophagus -conduction -stomach -secretion = initial digestion -mechanical processing -small intestine -terminal digestion -absorption -large intestine -water absorption -lubrication Digestive system-general
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Digestive System -Gut wall has distinctive organization - mucosa -epithelium -lamina propria -muscularis mucosae - submucosa -loose connective tissue - muscularis externa -inner circular -outer longitudinal -adventitia -oesophagus (top) -anal canal (bottom) -serosa -mesothelium -connective tissue Digestive system-organization
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Oesophagus - mucosa -stratified squamous -lamina propria -loose connective tissue -elastic fibers -muscularis mucosae -smooth muscle (thin) - submucosa -loose connective tissue -submucosal glands - muscularis externa -inner circular -outer longitudinal -upper esophagus = skeletal -adventitia -dense irregular Digestive system-esophogus
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Gastro-oesophageal Junction -abrupt change -stratified squamous to simple columnar -mucosal glands -no sphincter -regulated via muscle tone -thoracic vs gastric pressure -diaphragm Digestive system-esophogus
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Stomach -Function -digestion -chemical -physical -chyme -4 zones -cardia -fundus -corpus -pylorus -epithelium = simple columnar -secrete pepsinogen/acid -acid activates pepsin -endocrine cells -G cells secrete gastrin -stimulated by stretch -D cells -somatostatin -inhibit G cells Digestive system-stomach
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This note was uploaded on 12/23/2010 for the course BIOL 302 taught by Professor Mungo during the Fall '09 term at Waterloo.

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13) GI Tract [2] - Integument-skin Integument -epidermis...

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