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35 Cards in this Set
- Front
- Back
GI tract |
Mouth pharynx esophagus stomach small intestine |
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Accessory organs |
Salivary glands liver pancreas gallbladder |
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Ingestion |
Taking food into the mouth |
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Secretion |
Releasing water acid buffers and enzymes into the Lumen of the GI tract |
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Digestion |
Breaking down food |
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Absorption |
Passing digested products from the GI tract into the blood and lymph |
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peritoneum |
The membrane that covers the abdominal organs and lines abdominal cavity |
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Greater omentum |
Drapes over the intestine like a fatty |
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mesentry |
part of the peritoneum that binds the small intestine to the abdominal wall |
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Submucosa |
Connective tissue that binds mucosa to muclaris |
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Mucosa |
Interlining or digestive tract |
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Muscularis |
Thick layers of muscle mostly smooth muscle and parts skeletal in esophagus and anal sphincter muscles |
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Serosa |
Outermost layer which consists connective tissue |
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Enteric nervous system |
Control the secretions of the organs of the GI tract |
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Salivary amylase |
Begins digestion of starch |
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Mucus |
Lubricates food |
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Bolus |
Tongue moves food too contact the teeth and helped shape food |
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Deglutition voluntary stage |
Tongue shapes food |
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Deglutition pharyngeal stage |
Tongue Rises against the palate and closes the nasopharynx |
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Deglutition esophageal stage |
Pushes the bolus dow |
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Gastric juices |
Composed of mucus hydrochloric acid and digestive enzymes |
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chyme |
peristaltic contractions from the Fundus to the pylorus of the stomach mix gastric juices |
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Pepsin |
Hydrochloric acid secreted into the chyme kills bacteria and activates |
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Gastric lipase |
Quantity of lipids |
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Gastric emptying |
Stomach empties its contents into the small intestine |
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Villi |
Projections of the intestinal mucosa cells containing connective tissue blood vessels and lymphatic vessels that function in the absorption of the products of digestion |
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Small intestine |
jujenum illum duodenumjujenumillumWater soluble substances absorbed through the epithelial lining go into blood vessel fat soluble substances proceed into lymph vessels called lacteals and eventually make their way to the blood circulation |
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Bile salts |
Break down large lipids emulsification |
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Gallbladder |
Stores bile and releases it into the duodenum of the small intestine through the common bile duct when stimulated by cck |
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Pancreatic amylase |
Breaks down starches |
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tryipsin chymotropin |
Bridgestone proteins into amino acids |
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Pancreatic lipase |
Breaks down triglycerides into fatty acids |
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Small intestine |
Cells on the Villi of the small intestine absorb various molecules facilitated diffusion as well as active diffusion and the nature of the absorb substance passes are there into the blood in hepatic portal circulation or into the lacteal and lymphatic system |
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Gastrin |
Stimulates secretion of gastric juice increases mortality of GI tract and relaxes pylanc sphincter |
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Intestinal mucosa |
Stimulates secretion of pancreatic juice rich in bicarbonate ions |