chapter 7 - vitamins Flashcards
(194 cards)
what are vitamins
organic compounds essential in small amts for body functioning
doesn’t provide energy but enables body to use energy from carbs fats and protein
what was created to replace recommended dietary allownaes (RDAs) and when
Dietary Reference Intakes (DRIs) in 1997
who are inclined to vitamin deficiences
do not eat balanced didet
alchoholics
ppor and incapacitated elerdy
clients w serious diseases that affect appetite
ID
young children receiving inadequate care
deficiency of fat-soluble vitamins ofcur in clients w chorinc malabsorption (CF, celiac, crohns)
avitaminosis
without vitamins
hypervitaminosis
excess of one or more vitamins
how can vitamin loss be avoided
buying freshet unbruised veg and fruit locally and using within day time
prep fresh veg and fruit j before serving
heating canned veg quickly and in own liquid
follow package directions when using frozen veg or fruit
using as little water as possible when cooking and having it boil before adding veg, or preferably steaming them
cover the pain, cook veg util bright in color and crisp and tender
- save cooking liquid for soups steews and gravies
- store fresh veg and fruits in cool dark place
- microwave fruits and veg in 1-2 tbsp of water
- cook corb on cob in microwave by wrapping in paper towel
- roasting veg to retain nutrients rather than boiling
how are vitamins classified
solubility
fat solubiton - vitamin a, d,e, and k (4 total)
water insoluble - vitamin b complex and c (9 total)
vitamin d is sometimes classified as hormone
b-complex as catalysts or coenzymes
when vitmain has diff chem form but same purpose its sometimes called vitamer
what is a precursor or provitamin
substance from which body can synthesize specifci vitamin
carotenoids r example of precurose of vitamin a and r referred to as provitamin a
what are sources of vitamin a (retinol)
Liver, fish oils, egg yolks, and whole-fat dairy products
whole milk, butter, cream, cod liver oil
dark-green leafy veg, deep yellow or orange fruit, fortified margarine
functiosn of vitamin a
necessary for the formation of healthy epithelial tissue
mainteance of vision in dim light, maintance mucous membranes and healthy skin
, growth anddevelopment of bones,
reporducution,
healthy immune syste, antioxidants
keep eyes moist and free of infection, hel lining of lungs and intestines remain moist and disease free
deficiency of vitamin a
night blindness
xerophthalmia
respirairy infections
bone growth ceases
dry and scaly skin, fatigue
toxicity of vitamin a
birth defects
bone pain
anorexiant
enlargement of liver
severe headaches, bone pain, dry skin, hair loss, vomiting, and liver damage
sources of vitamin d (calciferol)
salmon and tuna, foritifed milk and yogurt, foritifed margarine, fortified orange juice, sunlight
lake trout, eggs, butter
functions of vitamin d (calciferol)
regulation of absortions of caclium and phosphorus
buildign and maintenance of normal bones and teeth
prevent of tetany
immune and muscular function
reduction of inflammation
regulates cell cycle and cell differentiation
deficiency of vitamin d (calciferol)
rickets
ostteomalacia
osteoporosis
poorly de eloped teeth and bone
muscle spasms
rickets (n chidlren)
toxicity of vitamin d (calciferol)
kidney stones
cacificiation of soft tissues
sources of vitamin e (tocopherol)
leaft green veg
margarine
salad dressing
wheat germ
veg oil
nuts
functions of vitamin e (tocopherol)
antioxidant
considered essential for protiection of cell strucutre, esp of rbc
deficiency of vitamin e (tocopherol)
destruction of rbc
toxicity of vitamin e (tocopherol)
bleeding
sources of vitamin k
liver, milk
leafy, green veg, cabbage, boccoli, brussel sportous
green leafy vegetables, cabbage, and broccoli. Prunes, blueberries, blackberries, eggs, grain products, and nuts also supply small amounts of this vitamin.
functions of of vitamin k
blood clotting
deficiency of vitamin k
prolonged blood clotting or hemorrhaging
toxicity of vitamin k
hemolytic anemia
interferes w anticlotting med
jaundice + brain damage