Vitamin Study Guide – Flashcards

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Vitamin A Role
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Vision
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Vitamin A soluble
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Fat Soluble
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Forms of Vitamin A
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carotenoids, retinol, retinal, and retonic acid
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Functions of Vitamin A
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vision, cell production and differentiation, replacing epithelial cells, producing immune cells, keeping secretion-producing linings of reproduction tract healthy, produce bone cells for growth
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Food Source of Vitamin A
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Yellow and orange fruits and veggies, liver, butter, fat containing dairy foods, egg yolk, other fortified foods; no cooking effects (beta-carotene is more bio-available when cooked slightly)
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Symptoms for deficiency of vitamin A
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Bitot's spots (foamy white patches on cornea), xerophtalmia (damaged cornea leading to blindness), scaly skin (gooseflesh), damage lining of secretion tracts, reproductive problems, weak immune system, growth retardation, bone deformities, defective teeth, kidney stones
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Symptoms for toxicity of vitamin A
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fatigue, vomiting, abdominal pain, liver damage, bone and joint pain, loss of appetite, skin disorders, headache, blurred/double vision
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Major role of vitamin D
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bone health
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soluble of vitamin D
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fat soluble
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forms of vitamin D
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D2, D3 (sunlight converts cholesterol to cholecalciferol which travels to liver, converted to immediate form, sends it to kidneys, converts to active form)
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functions of vitamin D
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regulates blood calcium levels
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Food source of vitamin D
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Sunlight, fortified milk and cereal, oily fish, egg yolk, butter, liver
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symptoms of deficiency for vitamin D
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rickets, osteomalacia, osteoporosis
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symptoms for toxicity for vitamin D
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calcium in blood and soft tissues, severe depression, nausea, vomiting, loss of appetite and bone mass
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Role of Vitamin E
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Antioxidants
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soluble of vitamin E
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Fat soluble
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functions of vitamin E
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protects vulnerable polyunsaturated lipids in cell membranes, blood and elsewhere in body (counters free radicals), protects lungs from oxidative damage from environmental contaminants, may help prevent some cancers and cardiovascular disease, helps protect eye, liver, breast, and muscle tissue, maintain beta-carotene antioxidant activity - good for your skin
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food sources of vitamin E
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nuts, seeds, vegetable oils, whole grain products, wheat germ oil, cooking reduces amount substantially
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Symptoms of Deficiency of Vitamin E
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rarely happens
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symptoms for toxicity of vitamin E
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nontoxic but can interfere with blood clotting and cause bleeding
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Role of Vitamin K
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bone health and blood clotting
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Soluble of Vitamin K
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fat soluble
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Functions of vitamin K
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works with calcium to form clots, help form bone, increases BMD which decreases fracture risk
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Food source of vitamin K
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plant foods, green veggies, plant oils, margarine, spreads, salad dressings, intestinal bacteria produce it
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symptoms of deficiency of vitamin K
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rare, but in people with fat malabsorption or using antibiotics
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symptoms for toxicity of vitamin k
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rare
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Major role for thiamin (B1)
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coenzymes
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soluble of thiamin (B1)
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water soluble
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functions of thiamin (B1)
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works as coenzyme in reactions producing energy
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Food source of thiamin (B1)
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pork, legumes, nuts, seeds, fish, seafood, meats, dairy, fruits, grains, destroyed by heat
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Symptoms of deficiency of thiamin (B1)
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beriberi (muscle weakness), headache, irratibility, depression, loss of appetite, Wernicke- korsakoff syndrome (mental confusion and memory loss, staggered gait, constant REM)
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Major role of riboflavin (B2)
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coenzyme
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soluble of riboflavin (B2)
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water
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Function of riboflavin (B2)
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2 coenzymes, extract energy from glucose, fatty acids, and amino acids, supports antioxidant activity
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Food source of riboflavin (B2)
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milk, cottage cheese, yogurt, enriched grain products, eggs, organ meats, light can destroy
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symptoms of deficiency of riboflavin (B2)
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ariboflavinosis-closely with alcoholism, glossitis- tongue gets shiny, smooth, and inflammed, angular stomatitis- mouth cracks at corners, cheilosis- lips become inflame and split, seborrheic dermatits- oil produce glands of skin become clogged, anemia
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Role of Niacin (B3)
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coenzymes
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soluble of niacin (B3)
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water soluble
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functions of niacin (B3)
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part of coenzymes for metabolic pathways and synthesize fatty acids
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food source of niacin (B3)
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meat, poultry, fish, nuts, peanuts, grain products, cooking does not affet
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symptoms of deficiency of niacin (B3)
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pellagra (rash with sunlight), dermatitis, diarrhea, dementia, death
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symptoms of toxicity of niacin (B3)
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flushing prickling feeling, heat on face, itchy, tingling
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role of B6
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coenzymes
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soluble of B6
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water soluble
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functions of B6
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involved in protein and amino acid metabolism, helps change amino acids into other amino acids and make nonessential amino acids, makes glucose from amino acids, release glucose from glycogen, helps in white blood cell synthesis for healthy immune system, reduce major neurotransmitters, help decrease risk for heart disease
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food source of B6
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meat, fish, poultry, potatoes, starchy veggies, fortified soy, whole grains, bananas, sunflower seeds, sensitive to temperature
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symptoms of deficiency of B6
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rare but some meds, poor diet or excessive alcohol cause, produces skin rash, anemia, disrupts nervous system activity, disrupts synthesis of red blood cells and oxygen binding ability, cause depression, headaches, confusion, convulsions
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symptoms for toxicity of B6
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upset stomach, headache, sleepiness, tingling, prickling, burning sensation
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role of B12
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coenzymes
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soluble of B12
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water
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functions of B12
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assists folate in DNA synthesis, blood synthesis metabolize homosynthesine, maintain myelin sheath
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Food source of B12
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animal derived foods and bacteria, fortified cereals
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symptoms of deficiency of B12
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pernicious anemia, inappropriate immune response attacks certain cells lining stomach
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other for B12
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need intrinsic factor
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Role of vitamin C
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antioxidants
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soluble of vitamin C
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water soluble
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functions of vitamin C
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antioxidants, form collagen, makes other essential compounds, enhances absorption of iron from plant fellds, enables cells in immune system to function effectivly
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food source of vitamin C
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fruits and veggies, highly vulnerable to heat and oxygen
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symptoms of deficiency of vitamin C
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scurvy, sore inflamed gums, fatigue
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symptoms for toxicity of vitamin C
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abdominal cramps, diarrhea, increases iron absorption
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