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Nutriton Exam 1 - Schloss > Water-Soluble > Flashcards

Flashcards in Water-Soluble Deck (38):
1

Retinoic Acid fxn

Gene expression

2

Retinol Fxn

reproduction and growth

3

Retinal fxn

vision

4

MC reason for hypovit. A

inadequate intake

5

#1 nut. def. worldwide

vit. A

6

Other vit. A fxn (3)

glycoprotein synthesis, immune, bone dev., enzymes & growth factors

7

Hypovit. A symptoms (4)

VISION (night blindness, bitot's spots, zerophthalmia)
Hyperkeratosis, dec. reproduction, more infxns

8

Acute hypervit. A symptoms (3)

N/V, Headache/dizzy, double vision

9

Chronic hyper vit. A symptoms (4)

dry, allopacia, joint/bone fractures, liver damage

10

Teratongenic affect of vit. A

craniofacial malform.

11

Sources of preformed vit. A

(retinol/retinol ester; active)
liver, meat, eggs, fortified dairy

12

Sources of proformed vit. A

(carotinoids)

13

Stepwise process of carotenoid breakdown (8)

carotenoid > retinal (ox) > retinoic acid > liver > acid reduced > retinol (esterified) > RE > chylomicrons

14

Stepwise process of vit. A absorption (5)

enterocyte (passive diffusion) > bound to CRBP > esterified via lecithin (LRAT) > RE > Chylomicrons

15

Vit. A digestion (4)

1) protein removed- Stomach SI (proteases)
2) FA removed- SI (lipases)
>>>Free retinol/carotenoid > micelles

16

% vit A absorption

80

17

Vit. A storage

50-80% (RE)- Liver

18

Carotinoid: Vit A

10:1

19

vit. D function

Cell differentiation/Growth
Ca/P homeostasis

20

Plant version-Vit D

cholecalciferol

21

Animal version- Vit D

Ergocalciferol

22

High vit. D = ___ Ca

high. (kidney stones)

23

Low vit. D = ___ Ca

low. (osteomalacia, rickets)

24

4 H's (Scurvy)

hemorrhagic, hyperkeratosis, hypochondriasis, hematologic

25

Thiamin Def=

BeriBeri

26

Thiamin =B_

1

27

Acute beriberi: age

Babies

28

Wet beriberi: age

Adults

29

Dry beriberi: age

Geriatrics

30

Riboflavin def=

ariboflavinosis

31

Niacin def=

pellagra

32

4 D's of Pellagra

Dermatitis, dementia, diarrhea, death

33

Panthathenic Acid def=

burning feet syndrome

34

Coenzyme associated with thiamin

TDP

35

Noncoenzyme associated with thiamin

TTP

36

Riboflavin =B_

2

37

Processes that require riboflavin

ETS, beta-ox, Krebs, synthesis of niacin and B6

38

High vit. D=

hypercalcemia & hyperphosatemia