ch. 9 GI
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| What is the inner most portion of the GI system | the mucosa
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| What lies directly below the mucosa | the submucosa
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| What is the name of the muscle layer | adventitia
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| What is the name of the outer lining of the bowel | the serosa
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| progressive contractions that propel food throught the gi system is a process known as | peristalsis
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| Chewing is sometimes referred to as | mechanical digestion
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| Food is digested by enzymes in the stomach and small bowel in a process known as | chemical digestion
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| What region of the gi system serves as the main region for food absorbtion | the small intestine
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| The chewing of food by the teeth is known as | mastication
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| The tongue uses touch, temperature, and taste receptors to provide what | sensory analysis
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| What is the primary enzyme in saliva | salivary amylase
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| The esophagus passes through an opening in the diaphram known as the | esophageal hiatus
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| Food that is churned and mixed with digestive juices forms a semiliquid mass called | chyme
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| The thick folds of the stomach wall are called | rugae
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| the mucosa includes many what | gastric pits
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| What cells produce hydrochloric acid for food digestion | perietal cells
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| what cells produce pepsinogen | Chief cells
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| Pepsinogen is inactive untill it is exposed to hydrochloric acid,at which time it is converted to it's activated form known as | pepsin
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| What enzyme breaks down proteins | pepsin
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| What is the longest part of the digestive tract | the small intestine
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| the small intestine contains three parts. what are they | the duodenum, jejunum, and ileum
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| What enzyme breaks down sugars | disaccharidases
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| what enzyme breaks down proteins | peptidases
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| The jejunum and ileum are the primary sites for what | absorbtion of nutrients
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| what valve prevents backflow of intestinal contents | ileocecal
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| What do you call the recesses that give the colon that puckered appearence | haustra
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| what organ acts as a reservoir for bile | the gallbladder
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| What organ is the largest internal organ of the body | the liver
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| what are a few of the livers functions | the storing of glucose, protein synthesis, and filtering of wastes from the blood
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| what organ is responsible for helping to fight infection and remove red blood cells from circulation | the spleen
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| what makes insulin,glucagons, and digestive enzymes | the pancreas
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| name 3 pancreatic enzymes that digest protiens | trypsin,chymotrypsin,carboxypeptidase
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| what enzymes break down fat | lipases
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| Digestive organs are surrounded by what | the peritoneum
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| The perietal peritoneum surrounds what | the abdominal cavity
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| the visceral peritoneum surrounds what | the organs.
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