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define digestive system group of organs that work together to digest food so it can be used by the body
list the part of the digestive system. hint, 8 parts. tract-mouth, throat, esophagus, stomach, small intestine, large intestine, rectum, and anus
what is the difference mechanical and chemical digestion? mechanical is breaking down, crushing, mashing of food, and chemical is large molecules being broken down into nutrients by enzymes
how do enzymes affect proteins and the body during chemical digestion? enzymes break down proteins into amino acids that can be absorbed into the bloodstream
what is the first step of digestion? teeth break food into smaller part; easier to digest
what is the second step of digestion? saliva from the salivary glands in the mouth contain enzymes that begins to break down carbohydrates
what is the third step of digestion? moves down esophagus to stomach
what is the last step of digestion? Stomach is muscular, bag like organ that contracts and squeezes food. Glands produce enzymes and acids that break down food. Acids also kills bacteria in food. Food moves to small intestines.
where is amylase found? in the mouth
what is the role of amylase in digestion? breaks down carbohydrates
define villi small finger like projections that increase surface area
what is absorbed in the small intestine? most nutrients
what is absorbed in the large intestine? water
where is the rectum? the rectum is the last section of the large intestine
what does rectum store? stores feces
explain heartburn heartburn occurs when chyme back flows from the stomach; caused by eating too much or before bed or eating acidic foods
explain constipation constipation occurs when the body does not get enough water, fiber or exercise
Created by: 19arinehart



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