Nutrition Module 8: Micronutrients Review Flashcards Preview

SMP - MNE Exam 2 > Nutrition Module 8: Micronutrients Review > Flashcards

Flashcards in Nutrition Module 8: Micronutrients Review Deck (194)
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31

What is the risk of folate deficiency in adults?

Cancer and CVD

32

What do polyglutamate folate serve as? Which kind?

Coenzyme that accept or donate 1 C units in :
1.. Catabolism or interconversion of Met, His, Ser, and Gly (esp. homocysteine to cysteine)
2. Choline synthesis and degradation
3. Serotonin and epi synthesis

+ DNA SYNTHESIS

Fully reduced tetrahydrofolate

33

What are 8 good food sources of folate?

1. Fresh dark leafy veggies
2. Legumes
3. Cereal
4. Citrus fruits
5. Organ meats
6. Yeast
7. Fortified grains
8. Flour-based foods

34

Folate: toxicity? 2

1. Masks B12 deficiency
2. Risk of tumors when taking supplements

35

What are the 9 water soluble vitamins?

1. Vitamin C
2. Folate
3. Thiamin
4. Riboflavin (B2)
5. Niacin (B3)
6. Pyridoxine (B6)
7. Cobalamin (B12)
8. Pantothenate
9. Biotin

36

Thiamin: sources? 4

1. Pork
2. Meat substitutes
3. Green peas
4. Enriched grains

37

Thiamin: functions? 3

1. Cofactor for alphaketoglutarate dehydrogenase, pyruvate dehydrogenase, etc.
2. Neuron function

38

Thiamin: deficiency? 3
2 at risk peeps?

1. Dry Beri Beri
2. Wet Beri Beri
3. Muscle weakness

1. Alcoholics
2. Hyperemesis gravidarum (pregnancy complication)

39

What are the symptoms of Dry Beri Beri? 4

1. Neuropathy
2. Confusion
3. Confabulation
4. Demention

40

What are the symptoms of Wet Beri Beri? 2

1. Heart failure
2. Edema

41

Thiamin: toxicity? 1

None

42

Riboflavin: sources? 3

1. Milk
2. Eggs
3. Broccoli

43

Where is riboflavin absorbed?

Proximal small intestine

44

Which vitamin has a saturable transport uptake mechanism?

Riboflavin

45

How is riboflavin excreted?

Urine

46

Where is riboflavin stored? 3

1. Liver
2. Kidney
3. Muscle

47

Riboflavin: functions? 1

1. Catalyzes redox rxns

48

Riboflavin: deficiency? 9

1. Edema
2. Dermatitis
3. Angular stomatitis (inflammation of mouth mucosa)
4. Anemia
5. Niacin deficiency
6. B6 deficiency
7. Impairs folate function
8. Nasolabial seborrhea
9. Angular cheilosis and stomatitis

49

What can riboflavin deficiency result from? 3

1. Cancer
2. Diabetes
3. CVD

50

Riboflavin: toxicity? 1

None

51

Niacin: sources? 4

1. Fortified dry cereal
2. Beef
3. Eggs
4. Milk

52

Niacin: functions? 2

1. Fuel metabolism
2. Synthesis/removal of many compounds

53

What is pellagra? 6 symptoms
Common in what peeps?

Deficiency of tryptophan and niacin:
1. Weight loss
2. Diarrhea
3. Dermatitis
4. Depression
5. Dementia
6. Death
7. Scarlet-colored tongue
8. Hyperpigmented skin

Alcoholics

54

Niacin: toxicity? 5

1. Flushing
2. GI things
3. Liver dysfunction
4. Glucose intolerance
5. Ocular effects

55

Pyridoxine: sources? 6

1. Meat
2. Poultry
3. Fish
4. Corn
5. Bananes
6. Potatoes (sweet and normal)

56

Pyridoxine: functions? 2

1. Transamination of AAs
2. Cofactor for many enzymes

57

Pyridoxine: deficiency? 8

1. Slow growth
2. Cerebral/Peripheral neuron damage
3. Confusion
4. Cheilosis (dry edges of mouth)
5. Depression
6. Microcytic anemia
7. Glossitis (tongue soreness)
8. Sideroblastic anemia, anisocytosis

58

Pyridoxine: toxicity? 1

1. Sensory neuropathy

59

Cobalamin: sources? 4

1. Meat
2. Poultry
3. Dairy
4. Eggs

Only foods of animal origin

60

Cobalamin: functions? 3

1. Cofactor for methionine synthase and L-methylmalonyl CoA
2. Conversion of homocysteine to methionine