Digestive systyem notes
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| where does protein digestion start? | It starts in stomach and is finished in small intestine
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| what breaks protein down? | Mainly gastric juices enzyme pepsin partially digest protein. Pancreatic enzyme and intestinal enzymes do the rest.
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| What breaks fat down? | bile contains no enzymes but emulsifies fats into the duodenum to break down into small droplets
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| what does pancreatic lipase do in fat digestion? | it emulsifies fats in small intestine
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| what happens in absorption? | digested food moves from intestine into blood or lymph.
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| where does food and most water absorption take place? | small intestine
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| what may be absorbed in large intestine? | water
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| where is carbohydrate digestion located? | mainly small intestine
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| whats breaks down carbohydrates in digestion? | pancreatic amylase,intestinal juices enzymes
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| what is digestion? | changes foods so that they can be used by cells.
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| what are the two types of digestion? | Mechanical and chemical digestion
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| what is mechanical digestion? | physical movement, physical changes in food
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| what is chemical digestion? | when food is broken down by chemicals such as enzymes
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| what is the appendix? | worm like tubular structure located off the cecum of the large intestine that has no important function in humans
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| how long is the large intestine ? | 5 feet long
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| where is the large intestine located? | forms lower portion of digestive system
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| what passes through the large intestine? | undigested and unabsorbed food enter large intestine after passing through the ileocecal valve
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| what is the ileocecal valve? | A sphincter that is the junction of the small intestine and the large intestine
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| how long does it take material to pass through the large intestine? | 3 to 5 days
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| What are the subdivisions of the large intestine in order? | cecum, ascending colon , transverse colon, descending colon, sigmoid colon, rectum, anal canal
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| what is the exterior opening called? | anus
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| what is the wall of the large intestine made of ? | smooth muscles fibers
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| what movements occur in the large intestine ? | the contracting smooth muscles fibers to produce churning, peristalsis, and defecation
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| where is the pancreas located? | behind stomach
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| what is the function of the pancreas? | secretes pancreatic juices
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| what do pancreatic juices do? | contains enzyme
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