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Nutrition
Nutrition 2009
51
Other
Undergraduate 3
10/23/2009

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Term
essential nutrients
Definition
nutrients for which specific biological functions have been identified and which the body can not synthesize in sufficient quantities to meet our biological needs.
Term
carbohydrate
Definition
the primary fuel source for the body, particularly for the brain and physical exercise
Term
protein
Definition
large complex molecules made up of amino acids and found as essentials components of all living cells
Term
fats
Definition
an important energy source for our bodies at rest and during low intensity exercise
Term
DRIs/RDA
Definition
a set of nutritional reference values for the US and Canada that apply to healthy people
Term
nutrient density
Definition
the relative amount of nutrients per amount of energy (or number of calories)
Term
malnutrition
Definition
a state of poor nutritional health that can be improved by adjustments in nutrient intake
Term
kwashiorkor
Definition
a form of protein-energy malnutrition that is typically seen in developing countries in infants and toddlers who weaned early because of the birth of a subsequent child; fed cereal instead and had inadequate protein
Term
marasmus
Definition
a form of protein-energy malnutrition that results from grossly inadequate intake of protein, energy and other nutrients
Term
nutrition transition
Definition
the increased availability of food and the change in the types of food available to the population as the economy of a developing country improves; coincides with increases in obesity and chronic diseases
Term
hunger
Definition
a physiological sensation that prompts us to eat
Term
appetite
Definition
a psychological desire to eat certain foods
Term
digestion
Definition
the process by which foods are broken down into their component molecules either mechanically or chemically
Term
absorption
Definition
the physiological process by which molecules of food are taken from the gastroinstestinal tract into circulation
Term
nutrition
Definition
scientific study of of food and how good nourishes the body/ influences health
Term
food
Definition
plants/ animals we consume
Term
nutrients
Definition
chemical substances found in food that our bodies use for energy to support the growth, maintenance, and repair of our tissues
Term
the 6 essential nutrients
Definition
carbohydrates, lipids, proteins, vitamins, minerals, water
Term
macronutrients
Definition
nutrients your body needs in large amounts to support normal health/ function, ie carbs, lipids and proteins
Term
lipids
Definition
organic substances largely insoluble in water, fats, composed mostly of C, H, and O
Term
proteins
Definition
contain C, H, O, N, support tissue growth, repair and maintenance, made of amino acids, provide us with energy but are not a primary energy
Term
elimination
Definition
the process by which the undigested portions of food and waste are removed from the body
Term
gastroinstestinal tract (GI)
Definition
a long, muscular tube consisting of several organs: the mouth, esophagus, stomach, small intestine, & large intestine
Term
sphincter
Definition
tight ring of muscles separating some organs in GI tract and opening when food is ready to pass to next section
Term
secretion of the mouth
Definition
saliva from salivary glands
Term
bolus
Definition
food that has been chewed and moistened in the mouth
Term
esophagus
Definition
muscular tube that connects and transports food from mouth to stomach
Term
stomach
Definition
j shaped organ where food is partially digested, churned, and stored until released in sm intestine
Term
stomach's secretion
Definition
gastric juice: acidic liquid, contains hydrochloric acid, pepsin and other compounds
Term
small intestine
Definition
10-12 ft long, food is broken down into its smallest components,
Term
gall bladder
Definition
pear shaped organ beneath liver that stores bile and secretes it into sm intestine
Term
pancreas
Definition
gland located behind the stomach, secretes digestive enzymes
Term
GERD (gastroesophageal reflux disease)
Definition
a more painful type of heart burn that occurs more than twice a week,
Term
Crohn Disease
Definition
a bowel disease that causes inflammation in the sm intestine leading to diarrhea, abdominal pain, rectal bleeding, weight loss, fever
Term
food allergy
Definition
an allergic reaction to a good, caused by a reaction of the immune system,
Term
food intolerance
Definition
gastrointestinal discomfort caused by certain foods
Term
celiac disease
Definition
genetic disorder characterized by the inability to absorb a component of gluten that causes an immune reaction that damages sm intestine lining
Term
ulcerative colitis
Definition
chronic disease of large intestine or colon indicated by inflammation and ulceration of the innermost lining of the colon
Term
glucose/fructose/galactose
Definition
most abundant sugar molecule, a monosaccharide, preferred source of energy for brain and for cells
Term
monosaccharide
Definition
simplest of carbohydrates, consists of one sugar molecule
Term
disaccharide
Definition
carbohydrate compound consisting of 2 monosaccharide molecules together
Term
lactose/maltose/sucrose
Definition
most common disaccharides,
Term
complex carbohydrate
Definition
a nutrient compound consisting of long chains of glucose molecules, such as starch, glycogen, fiber
Term
polysaccharide
Definition
a complex carbohydrate consisting of a long chain of glucose
Term
glycemic index
Definition
rating of the potential of foods to raise blood glucose and insulin levels
Term
glycemic load
Definition
the amount of carbohydrate in a good multiplied by glycemic index of the carbohydrate
Term
hyperglycemia
Definition
a condition in which blood glucose levels are higher than normal
Term
diabetes
Definition
a chronic disease in which the body can no longer regulate glucose
Term
type 1 diabetes
Definition
disorder in which the body can not produce enough insulin
Term
type 2 diabetes
Definition
progressive disorder in which body cells become less responsive to insulin, can be delayed/ prevented with a healthful diet, maintaining a healthful weight
Term
hypoglycemia
Definition
a condition marked by blood glucose levels that are below normal fasting levels,
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