[2] Class 5- Theisen Fundametal Of Nutrition Flashcards Preview

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Flashcards in [2] Class 5- Theisen Fundametal Of Nutrition Deck (141)
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61

EFAs?

Linoleic acid
Linolenic acid
Arachidonic acid `

62

Why is it called EFA?

Our body cant produce it

63

Introduction of a double bond in FA ________ potential energy

Reduces

64

How are trans fats metabolized?

They aren't able to be metabolized. They increase cholesterol because the body can only metabolize Cis fats

65

Digests short and medium chain FAs in oral cavity:

Lingual lipase

66

Digest short and medium chain FAs in gastric cavity:

Gastric lipase

67

Digest triacylglycerols in small intestine

Pancreatic lipase w/ colipase

68

Digests phospholipids in small intestine

Phospholipase

69

Digest cholesterol esters in small intestine

Cholesterol esterase

70

Fatty acid derived vitamins:

A,D,E,K

71

FA dervied vitamins can be important in:

Signaling

72

Cholecalciferol

Vitamin D3

73

What is the bioactive form of Vit D and is derived from vit D2 and D3?

Calcitriol

74

How id Vit D produced?

Exposure of UV light on skin

75

Where is Vit K1 obtained from?

Leafy green vegetables

76

Vitamin K2 is synthesized by

bacteria in the large intestine and colon

77

Vit D is ______-derived

Cholesterol

78

2 ways Vit D is produced:

In the intestine and in the skin by UV exp.

79

Liver makes _______ and kidney makes the active for _______

Calciferol; calcitriol

80

Scientific name for calcitriol

1,25-dihydroxycholecalciferol

81

Vit D intestinal rxn:

Ergocalciferol (D2)

Cholecalciferol (D3)

82

Skin precursor to cholecalciferol (D3)

7-dehydrocholesterol

83

When cholecalciferol (D3) in either skin or intestine, where does it travel? What does it become?

Liver;

25-hydroxycholecaliferol

84

What is the enzyme in the liver that converts cholecalciferol to 25-hydroxycholecalciferol?

25-hydroxylase

85

After rxn in liver by 25-hydroxylase, where does resulting 25-hydroxycholecalciferol travel? What is produced? By what enzyme,?

Kidney;
1,25-dihydroxycholecalciferol [calcitriol];
1-alpha-hydroxylase

86

Regulation of calcitriol [active vit D] +/-?

+: PTH
-: calcitriol

87

What is asso. W/ vit k?

Blood clotting

88

What enzyme asso w/ vit k is asso. W/ clotting?

Gamma-carboxylase

89

What is vit k function w/gamma-carboxylase?

Cofactor for clotting

90

How does warfarin function?

Inhibits gamma carboxylase by inhibiting its cofactor (vit k) `