Vitamins (A) Flashcards
1
Q
Vit A other names
A
Retinoic acid
Retinal (aldehyde form)
Retinol (alcohol form)
Anti-infective
vitamin
2
Q
1 RE is
equal to:
A
✓ 1 ug
retinol
✓ 6 ug
beta
✓ 12 ug
mixed
✓ 3.33 IU
retinol
✓ 10 IU
beta-carotene
2
Q
Vitamin A function
A
- Normal vision
- Maintenance and repair of healthy epithelial cells
- Improved immune system
- Normal bone development
- Normal reproduction
and lactation - Normal ear functioning
- Gene
expression
3
Q
Vitamin E for
A
for cleaving beta
carotene to retinol
4
Q
Protein
A
in metabolism
5
Q
Zinc
A
in interference
during their deficiency
6
Q
Diffiency of Vitamin A
A
- Toad’s skin
- Eye defects
(xerosis, xerophthalmia) - Impaired growth
- Depressed immune
function - Keratinization
- Corneal ulceration
7
Q
Toxicity
A
- Hypervitaminosis
A – headache, dizziness, nausea, dry skin, hemoglobin loss, cessation of menstruation
(>15,000 ug RE) - Hypercarotenemia
– excess beta-carotene - Teratogenic – birth
defects as the cause
8
Q
Food sources
A
- Green leafy
and yellow vegetables - Yellow fruits
- Liver
- Organ meats
- Egg yolk
- Fish liver oils (richest)
- Butter
- Fortified margarines
