I highly recommend that you study all of the key terms in your text from Chapters 2, 3, 4, & 5.
Read the objectives at the beginning of Modules 1 & 2 and put the answers to them in your own
words- try teaching your study partner, your kid, your boyfriend, or your cat. You have to be able
to understand the concept to teach it.
Read the Blackboard lesson content in each module, as it sometimes contains important info not
highlighted by your book.
Read and thoroughly understand the topics discussed in the DRI lecture.
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Review the AMDR(Acceptable macronutrient distribution range) ranges (percentages)
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Carbohydrates 45-65%
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Protein 10-35%
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Lipids or Fats 20-35%
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Know the RDA(Recommended daily allowance-) for macronutrients (grams).
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Carbohydrates 130g
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Digestion
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How does digestion occur? Start by chewing- swallowing-down the esophagus-entry into the
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stomach-churning and turns to chyme- food passes to through the pyloric sphincter into the
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duodenum (majority of nutrients-vitamins,minerals,lipids-began in the small intestine)-
peristalsis begins– large colon(water is absorbed 5-8L) -
Where does it start and end? Start-Mouth- mastication End- Glucose
7/14/17
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, Nutrition Exam One Concept Guide 2
What organs are involved, and what are their functions in digestion?
Small intestine- majority of nutrients are absorbed, mucous and enzymes into play
Bile is produced in the liver and stored in the gall bladder.
Which organs use mechanical processes? The teeth aid in mechanical digestion by
masticating (chewing) food.
Which use chemical processes, and what are those chemicals called? Chemical process is in
the stomach which include acid(hydrochloric acid creates the acidic environment necessary
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for certain digestive enzymes to work ), mucus(viscous secretions protect the stomach lining
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from the eroding effect of the acid), and enzymes(pepsin which begins the breakdown of
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protein, pepsin is secreted in the form of pepsinogen and activated by hydrochloric acid);
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Absorption
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What happens after digestion has occurred? When digestion of the macronutrients is
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complete, the simplified end products are ready for absorption. Carbohydrates – glucose,
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fructose and galactose (monosaccharides); Fat- fatty acids, monoglycerides, diglycerides,
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and glycerol; Protein- amino acids, dipeptides;
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What substances are absorbed in each organ along the GI tract?
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What conditions or alterations in health can affect digestions & absorption? Removal of the
large intestine can lead to higher chance of dehydration. Chrons disease, gurd, celiac disease,
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