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Nutrition Exam 4
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33 Terms
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1
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Fat soluble vitamin absoprtion
absorbed like fats, first into the lymph and then into the blood
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Fat soluble vitamin transport and storage
Must travel with protein carriers in watery body fluids; stored in the liver or fatty tissue
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Fat soluble vitamin excretion
Not readily excreted; tend to build up in the tissues
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Fat soluble vitamin toxicity
toxicities are more likely fro supplements but occur rarely in food
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Fat soluble vitamin requirements
needed in periodic doses (perhaps weeks or even months) because the body can draw on its stores
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Water soluble vitamin absorption
absorbed directly into the blood
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Water soluble vitamin transport and storage
travel freely in watery fluids; most are not stored in the body
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Water soluble vitamin excretion
readily excreted in the urine
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Water soluble vitamin toxicity
toxicities are unlikely but possible with high doses from supplements
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Water soluble vitamin requirements
needed in frequent doses (perhaps one to three days) because the body does not store most of them to an extent
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Vitamin A soluble
fat (1)
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Vitamin D soluble
fat (2)
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Vitamin E soluble
fat (3)
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Vitamin K soluble
fat (4)
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Vitamin B soluble
water (1)
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Vitamin C soluble
water (2)
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Vitamin A precursor
beta-carotene
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vitamin a
retinol
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vitamin a sources
animals, plants
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vitamin a normal range
500-3000 micrograms a day
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vitamin d
calcitriol
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vitamin d sources
sunlight synthesis, milk/dairy, fortified products
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vitamin d normal range
15 micrograms daily
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vitamin e
tocopherol
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vitamin e sources
anything w or made from oil (mayo, seeds, wheat germ also)
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vitamin e normal range
15 mg
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Vitamin k
phylloquinone (green plants) and menaquinone (bacterially synthesized)
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vitamin k sources
intestinal bacteria and dark leafy green veggies
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vitamin k normal range
120 micrograms (men) and 90 micrograms (women)
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vitamin c
ascorbic acid
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vitamin c sources
fruits and vegetables (and white potatoes)
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vitamin c normal range
90mg (men) 75mg (women) \[smokers add 35\]
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