3.1.7 Flashcards
macronutrients
nutrient that is needed by the body in relatively large amounts
carbohydrate functions
body’s preferred fuel source for energy.
provides brain and CNS with a continuous supply of glucose to brain
carbohydrate food source
pasta.
multigrain bread.
vegetables such as potato
fibre
made up of indigestible part of plant matter
fibre functions
absorbs water in large intestine, add bulk to faeces, thus reducing constipation.
feelings of fullness/satiety
protein function
necessary for healthy growth, repair and maintenance of all body cells/tissues.
secondary fuel source for energy
protein food source
animal: lean red meat.
poultry.
plant: nuts, oats
fat function
fuel for energy.
helps maintain body temperature (insulate).
helps protect body organs
Monounsaturated fats
increase HDL and lower LDL cholesterol transporter in blood
Polyunsaturated fats
maintain level of HDL and lower LDL cholesterol transporter in blood
Saturated fats
increase LDL cholesterol in the blood
Trans fats
increase LDL cholesterol transporter in blood and decrease HDL cholesterol
monounsaturated fat food source
olive oil.
avocado
polyunsaturated fats food source
omega 3: oily fish, canola oil.
omega 6: nuts (almonds), seeds
saturated fats food source
fatty meats.
full dairy products.
deep friend goods
trans fats food source
processed foods: pastries, cakes.
fatty meats.
margarines
cholesterol
waxy fat-like substance found in saturated fats.
helps form cell membranes.
not water soluble so liver packages it inside lipoproteins for transportation through blood
HDL (high density lipoproteins)
‘good’ health cholesterol.
carries cholesterol from the blood back to the liver for elimination.
helps remove plaque build-up from arteries
LDL (low density lipoproteins)
‘bad’ lousy cholesterol.
carries most cholesterol in blood, deposits in arteries leading up to plaque build up
micronutrients
nutrient that is required by the body in small amounts
calcium function
essential for construction and maintenance of strong bones (and teeth) thus helps reduce risk of osteoporosis
calcium food sources
milk.
cheese.
yoghurt
phosphorus functions
combines with calcium to form calcium phosphate for construction and maintenance of strong bones (and teeth) thus helps reduce risk of osteoporosis
phosphorus food sources
milk.
meat.
eggs
sodium functions
assists with regulation of fluids in the body, thus helps regulate blood volume and pressure
sodium food sources
processed foods (vegemite, ham). table salt
vitamin D function
essential for absorption, regulation and use of calcium and phosphorus needed in growth and maintenance of strong bones (and teeth) this helps reduce the risk of osteoporosis
vitamin D food sources
butter.
cream.
salmon
water functions
important for all chemical reactions to occur in body as every bodily function requires water.
helps transport nutrients to cells.
helps lubricate joints
water food sources
tap water.
milk.
watermelon