digestive system and
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each of the black spaces below before clicking
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| what are the accessory digestive organs | teeth, salivary glands, gallbladder, liver and pancreas
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| alimentary canal or G.I tract | consists of mouth, pharynx, esophagus, stomach, small and large intestine
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| name the two groups the organs of the digestive system are seperated into | alimentary canal also known as gi tract and accessory digestive organs
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| once food has been ingested and digested what comes next | absorption where the bodys cells absorb the broken down good molecules
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| what cells line the digestive tract | epithelial cells
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| what is the process called where ingested food becomes available to body cells | digestion
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| how can ingested good become available to the body cells | it must first be broken down chemically and physically. physically = chewing chemically= enzymatic hydrolysis
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| alimentary canal | the digestive system consists of a hollow tube extending from the mouth to the anus
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| state the overall function of the digestive system | eliminate undigested food provide th body with nutrients and water ingest, digest,and absorb food
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| trypsin is a protease similar to pepsin the protein digesting enzyme in the stomach, would trypsin work well in the stomach | no the stomach is highly acidic while trypsin works well in the neutral basic environment of the small intestine
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| list three characteristics of enzymes | protein molecuels, biological catalyst, hydrolases
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| name the end products of digestion for protiens | amino acids
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| name the end products of digestion for carbohydrats | simple sugars
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| name the end products of digestion for fats | fatty acids and glycerol
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| what do segmental movements do | they serve mainly to mix foodstuffs with digestive juices
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| define segmental movements | local constrictions of the organ wall that occur rhythmically
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| define peristalic movements | the major means of propelling food through most of the digestive viscera
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| define substrate | the material or substance or molecules on which an enzyme acts on
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| define enzyme | large protein molecules produced by body cells also biological catalysts
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| define catalyst | they increase the rate of a chemical reaction without themselves becoming part of the product
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| define hydrolase | an enzyme that catalyzes the hydrolysis of a chemical bond
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| hydrolysis | the chemical breakdown of a compound due to the reaction with water
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| define controls | specimens or standards agaianst which experimental samples are comapred
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| which enzyme is necessary for starch digestion | salivary amylase
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| what reagent is used for the starch test | lugols IKI solution positive = blue black
negative= no color change
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| what reagent is used for sugar test | benedicts solution positive= green to orange percipitat
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| what enzyme is used for protein digestion | trypsin
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| what substance is used to test for hydrolysis | BAPNA Positive= yellow
negative=clear
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