Nutrition Basics Flashcards
(83 cards)
Chemical substances in foods that are used by the body for growth and health
nutrients
Access at all times to a sufficient supply of safe, nutritious foods
food security
Limited or uncertain availability of safe, nutritious foods, or the ability to acquire them in socially acceptable ways
food insecurity
A unit of measure of the amount of energy supplied by food. Also known as the “kilocalorie” (kcal), or the “large Calorie.”
calorie
substances required for growth and health that cannot be produced, or produces in sufficient amounts, by the body. They must be obtained from the diet.
essential nutrients
Amino acids that cannot be synthesizes in adequate amounts by humans therefore must be obtained from the diet. Also called indispensable amino acids
essential amino acids
Nutrients required for growth and health that can be produced by the body from other components of the diet
nonessential nutrients
The six categories of nutrients
Carbohydrates, Protein, Fats (Lipids), Vitamins, Minerals, Water
Scientifically agreed-upon standards for daily intakes of nutrients from the diet developed for use on nutrition labels
daily values
a condition in which cell membranes have a reduced sensitivity to insulin so that more insulin than normal is required to transport a given amount of glucose into cells
insulin resistance
a disease characterized by high blood glucose levels due to the body’s inability to use insulin normally, to produce enough insulin, or both
type 2 diabetes
a measure of the extent to which blood glucose levels are raised by consumption of an amount of food that contains 50 grams o carbohydrate compared to 50 grams of glucose. A portion of white bread containing 50 grams of carbohydrates is sometimes used for comparison.
glycemic index
the “building blocks” of protein. Unlike carbohydrates nd fats, amino acids contain nitrogen.
amino acids
Amino acids that can be readily produced by humans from components of the diet.
nonessential amino acids
A serve form of protein-energy malnutrition in young children. It is characterized by swelling, fatty liver, susceptibility to infection, profound apathy, and poor appetite.
Kwashiorkor
the fat soluble components of fats in foods
fatty acids
a component of fats that is soluble in water t is converted to glucose in the body.
glycerol
components of fat that are a required part of the diet
essential fatty acids
A group of physiologically active substances derived from the essential fatty acids. They are present in many tissues and perform such functions as the constriction or dilation of blood vessels and stimulation of smooth muscles and the uterus.
prostaglandins
Biologically active substances produced in platelets that increase platelet aggregation (and therefore promote blood clotting), constrict blood vessels, and increase blood pressure.
thromboxanes
Biologically active substances produced in platelets that increase platelet aggregation (and therefore promote blood clotting), dilate blood vessels, and reduce blood pressure.
prostacyclin
Fats in which adjacent carbons in the fatty acid component are linked by single bonds only.
saturated fats
Fats in which adjacent carbons in one or more fatty acids are linked by one or more double bonds.
unsaturated fats
Fats in which only one pair of adjacent carbons in one or more of its fatty acids is linked by a double bond.
monounsaturated fats