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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61

Pantothenate: deficiency? 6

1. Fatigue
2. Depression
3. Anemia
4. Loss of hair color
5. Infertility
6. Impaired immune response

62

Cobalamin: deficiency? 4

SAME AS FOLATE +
1. Neuropathy
2. Depression
3. Confusion
4. Dementia

63

Cobalamin: toxicity? 1

None

64

Pantothenate: sources? 4

1. Sweet potatoes
2. Legumes
3. Yogurt
4. Chicken

65

What are the 3 precursors for the synthesis of CoA?

1. Pantothenate
2. Cysteine
3. ATP

66

Pantothenate: functions? 1

1. Acyl carrier protein in fatty acid synthase

67

What are the 6 functions of CoA?

1. Fuel metabolism
2. Protein modification
3. Synthesis of fatty acids
4. Phospholipids synthesis
5. Cholesterol synthesis
6. Steroid hormones

68

Pantothenate: toxicity? 1

None

69

Biotin: sources? 5

1. Intestinal flora
2. Cauliflower
3. Soybeans
4. Eggs
5. Mushrooms

70

Biotin: function? 1

Coenzyme for carboxylases

71

Biotinidase function? 1

Absorption and recycling of protein-bound biotin

72

In what people is biotin deficiency seen?

People with biotinidase defect

73

Biotin: toxicity? 1

None

74

Where is pyridoxine stored?

Muscles

75

Overall, what are water soluble vitamins used for?

Cofactors for fuel metabolism

76

Are mineral/trace elements stored extensively?

YES (weeks storage)

77

Where are mineral/trace elements stored?

1. Bone
2. Metalloproteins

78

What effects do trace elements cause in excess?

Severe toxic effects

79

Iron: sources? 2 types: which one is better absorbed?

1. 100% non-heme iron: fortified grains, legumes, broccoli

2. 40% heme iron: meat (BETTER ABSORBED)

80

Iron: functions? 8

1. O2 transport
2. Respiration
3. Antioxidant
4. Hormone synthesis
5. AA metabolism
6. Lipid metabolism
7. Vitamin A metabolism
8. Sulfite metabolism

81

Iron: deficiency? 6

1. Microcytic, hypochromic anemia
2. Cancerrisk
3. Growth/Brain development delay
4. Alter hair/nail texture
5. Impaired immune function
6. Angular cheilosis

82

Which 2 deficiencies can cause microcytic anemia?

1. Pyridoxine
2. Iron

83

What 5 deficiencies have increased cancer risk?

1. Vitamin D
2. Riboflavin
3. Folate
4. Iron
5. Zinc

84

What are the 4 inhibitors of iron absorption?

1. Phytates
2. Polyphenols
3. Oxalate
4. Competing nutrients: Ca2+. Zn2+, Mg2+

85

Iron: toxicity?

1. Skin discoloration
2. Cirrhosis
3. Hepatosplenomegaly
4. Cardiomyopathy

86

What compounds can enhance iron absorption? Eg?

What trace element shares some of the absorption mechanisms?

Organic acids (Vitamin C)

Iron

87

What is the leading cause of poisoning in kids?

Accidental iron overdose

88

Copper: sources? 4

1. Chicken
2. Chocolate
3. Beans
4. Instant cereal

89

Copper: functions? 5

1. Cofactor for cytochrome c
2. Cofactor for superoxide dismutase
3. Iron metabolism
4. Catecholamine formation
5. Cross-linking of collagen and elastin

90

Copper: deficiency? 5

1. Impaired brain function
2. Impaired vascular/bone integrity
3. Impaired metabolic control
4. Neutropenia
5. Sideroblastic anemia, anisocytosis