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75 Cards in this Set

  • Front
  • Back
What are the 6 classes of nutrients?
carbohydrates, lipids, minerals, water, vitamins, proteins
Which nutrients are inorganic?
minerals and water (do not contain carbon)
What is the difference between inorganic nutrients and organic nutrients?
Inorganic nutrients do NOT contain carbon
Studies of populations that reveal correlations between dietary habits and disease incidence are.....?
epidemiological studies
What percent of calories should come from carbohydrates?
45-65%
What percent of calories should come from fat?
20-35%
What percent of calories should come from protein?
10-35%
EAR =
Estimated Average Requirements
RDA =
Recommended Dietary Allowances
AI =
Adequate Intakes
UL =
Tolerable Upper Intake Levels
EER =
Estimated Energy Requirement
AMDR =
Acceptable Macronutrient Distribution Ranges
Primary deficiency
a nutrient deficiency caused by inadequate dietary intake of a nutrient
Secondary deficiency
a nutrient deficiency cause by something such a disease or drug interaction that reduces absorption, accelerates us, hastens excretion, or destroys the nutrient.
Subclinical deficiency
a deficiency in the early stages, before the outward signs have appeared
What are the 6 diet-planning principles?
Adequacy, balance, kCalorie (energy) control, nutrient density, moderation, variety
5 food groups
Fruits, vegetables, grains, protein foods, milk and milk products
Foods within a given food group of the USDA Food Guide are similar in their contents of:
vitamins and minerals
Enriched grain products are fortified with:
iron, thiamin, riboflavin, niacin, and folate
Nutrient claims
statements that characterize the QUANTITY
Health claims
statements that characterize the relationship between a nutrient or other substance in a food and DISEASE OR CONDITION
Structure-function claims
statements that characterize the relationship between a nutrient or other substance in a food and its ROLE IN THE BODY
What is the path that food follows through the digestive system?
Mouth --> Esophagus --> Stomach --> Small intestine --> Large intestine
Peristalsis
wavelike muscular contractions of the GI tract that push its contents along
Which parts of the body secrete digestive juices or bile?
salivary glands, gastric glands, pancreas, liver, galbladder, intestinal glands
The main function of bile is to:
emulsify fats
The pancreas neutralizes stomach acid in the small intestine by secreting:
bicarbonate
Which nutrient passes through the GI tract mostly undigested and unabsorbed?
fiber
How is blood routed through the digestive system?
heart --> arteries --> capillaries --> veins --> heart
All blood leaving the GI tract travels first to the:
liver
Digestion and absorption are coordinated by which 2 systems?
hormonal system and nervous system
Gastrin, secretin, and cholecystokinin are examples of:
hormones
glucose + glucose =
maltose
glucose + fructose =
sucrose
glucose + galactose =
lactose
3 monosaccharides important in nutrition:
glucose, fructose, galactose
3 important polysaccharides in nutrition:
glycogen, starches, fibers
condensation (key word to remember is...?)
combine
The significant difference between starch and cellulose is that:
digestive enzymes can break the bonds in starch, but not in cellulose
The ultimate goal of carbohydrate digestion and absorption is to yield:
glucose
With insufficient glucose in metabolism, fat fragments combine to form:
ketone bodies
health effects of sugars
nutrient deficiencies and dental caries
Added sugars should account for no more than _______ of the day's total energy intake.
25%
Risk of using sugar alcohols
low glycemic response
Benefit of sugar alcohols
do not contribute to detail caries
Health effects of starches and fibers
heart disease, diabetes, GI health, cancer, weight management
What foods provide starches and fibers?
grains, vegetables, fruits, milk products, protein foods (legumes)
Three classes of lipids
Triglycerides, phospholipids, and sterols
Roles of phospholipids
help fat-soluble substances to pass easily thru cells; emulsifiers
What features distinguish fatty acids from each other?
length of carbon chain, degree of unsaturation, and location of double bonds
saturated
maximum number of hydrogen atoms
unsaturated
lacks hydrogen atoms and has at least 1 double bond between carbons
Hydrogenation
hydrogens are added to reduce # of double bonds to make fats more saturated; produces trans-fatty acids
Trans-fatty acids
fatty acids with hydrogens on opposite sides of the double bond
3 fatty acids + glycerol =
triglyceride
phosphate group + choline + 3 fatty acids =
phospholipid
What kind of structure do sterols have?
multiple-ring structure
What transports lipids?
lipoproteins
Which of the lipoproteins are the largest and least dense?
chylomicrons
Micelles are part of lipid....
absorption
Very Low Density Lipoproteins are composed primarily of...
triglycerides
Low Density Lipoproteins are composed primarily of...
cholesterol
High Density Lipoproteins are composed primarily of...
protein!
Chylomicrons are produced where?
in the small intestine
Which of the fatty acids are essential?
linoleic acid and linolenic acid
Linoleic acids go with (Omega-6 or -3?)
Omega-6
Linolenic acids go with (Omega 6 or 3?)
Omega-3
Dietary Reference Intakes (DRI)
set of nutrient intake values used to plan and evaluate diets for HEALTHY PEOPLE
EAR (Estimated Average Requirement)
amount of nutrition that supports a specific function in the body for HALF OF THE POPULATION
RDA (Recommended Dietary Allowance)
establishes a goal for dietary intake that will meet the need of ALMOST all healthy people.
4 Nutrition Assesment methods
historical info on diet and health, anthropometric measurements, physical examinations, and lab tests
Water soluble nutrients or small fat fragments enter the....
blood
Fat soluble nutrients enter the ....
lymph
Functions of triglycerides in the body:
provide energy, insulate against temp. extremes, protect against shock, and help the body use carbs and protein efficiently