vitamins/ minerals Flashcards

(47 cards)

1
Q

what are some examples of water soluble vitamins

A

B vitamin and vitamin C

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2
Q

what are some examples of fat soluble vitamins

A

vitamin A, D, E, k

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3
Q

what is the absorption of water soluble vitamins

A

directly into the blood

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4
Q

what is the absorption of fat soluble vitamins

A

first lymph then blood

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5
Q

what is the transport of water soluble vitamin

A

travel freely

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6
Q

what is the transport of fat soluble vitamin

A

protein carriers

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7
Q

what is the storage for water soluble vitamin

A

circulates freely in aqueous

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8
Q

what is the storage for fat soluble vitamins

A

cells

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9
Q

what is the excretion for water soluble vitamins

A

easily

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10
Q

what is the excretion for fat soluble vitamins

A

reamin in fat storage cites - so less readily available

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11
Q

what is the toxicity for both water and fat soluble vitamins

A

possible from supplements

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12
Q

what is the intake time for water soluble vitamin

A

day 1-3

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13
Q

what is the intake for fat soluble vitamin

A

weeks to months

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14
Q

what is the role of water soluble vitamins in energy metabolism and what vitamin is most important

A

involved in enzymes with energy release and storage
B vitamins

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15
Q

when are folate (b9)supplements recommended

A

for pregnancy to reduce neural tube defects

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16
Q

what cured men who had scurvy

A

oranges and limes = vitamin C

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17
Q

if someone had small skin hemorrhages around hair follicules, largeer bruises in muscles, internal hemorrhages then what deficiency would this be

A

vitamin C

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18
Q

what is the main form od vitaminC

A

L-ascorbic acid, reduced form

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19
Q

the rich food sources of vitamin C is

A

fruit and vegetables - including potaotos

20
Q

where is the vitamin C absorbed

A

small intestine by active transport

21
Q

what is vitamin A a generic term that describe what

A

retinol and related structures and the pro-vitamin A carotenoid

22
Q

what doe retinoids include

A

retinol, retinal, and retinoic acid

23
Q

what are plant pigments - e.g. what makes plants colourful

A

carotenoids
- acts as antioxidants

24
Q

what is the activity of retinol described as

A

retinol equivalent

25
1 RE = how many beta-carotene
6
26
what are the main functions that vitamins help with the body
eye (healthy corneas, vision), reproduction, growth, health of epithelial tissue and skin, immunity
27
what are the two roles of vitamin A w/ vision
1, key component of visual cycle 2. health of epithelial cell
28
11 cis retinal is a component of chromophore found in two types of light receptors what are these
rod cells, cone cells
29
what intensity of the light are the rod cells
low light intensity
30
what intensity of light are cone cells
higher light and colour
31
the 2nd role of vitamin A w/ vision is health of epithelial cells why is this important
retinoic acid needs to keep eye moist because the first sign of vitamin A defiency is dry eyes
32
what is the spot called if you have a dry eye
bitot spot
33
what does lack of vitamin A cause
night blindness - inability to see light
34
what are good sources of retinoids
liver milk, butter, cheese, egg yolk, some fatty fish
35
what are some good sources of carotenoids
dark leafy vegetables yellow, orange colours vegetables and fruit
36
what is keratinisation
symptom of vitamin A deficiency - changes in epithelial cell and rough , dry, and scaly skin
37
how can vitamin A and beta-carotene toxicity occur w/ concentrated amount of pre formend vit A from
animal foods or supplements
38
Birth defects (teratogen), acute: variety but can cause deathm chrinic: variety of effects, discolouration of skin from beta-carotene are symptoms of what
vitamin A toxicity
39
where is vitamin K found
found in green plants
40
what re the main functions of vitamin K
blood cloting, bone metabolism, inflammation, prevents oxidative damage in brain
41
deficiency and toxicity from diet is rare what vitamin is this talking about
vitamin K
42
what are the functions of vitamin E
soluble antioxidant, stabilises cell membrane, protects plasma lipoprotein from oxidative dmage
43
what are some sources of vitamin E in foods
green leafy vegetables, whole grain foods, polyunsaturated, nuts and seeds
44
for vitamine A, beta-carotene and cancer scientific rational from observational studies shows
inverse association between fruit and vegetable intake and cancer
45
what can B vitamin niacin defiency cause
dementia
46
what can a lack of vitamin D cause
retard bone growth
47
what does B vitamin folate help prevent
birth defects