Vitamins (A)

Question 1

Vit A other names

Answer 1

Retinoic acid
Retinal (aldehyde form)
Retinol (alcohol form)
Anti-infective
vitamin

Question 2

1 RE is
equal to:

Answer 2

✓ 1 ug
retinol

✓ 6 ug
beta

✓ 12 ug
mixed

✓ 3.33 IU
retinol

✓ 10 IU
beta-carotene

Question 2

Vitamin A function

Answer 2

• Normal vision
• Maintenance and repair of healthy epithelial cells
• Improved immune system
• Normal bone development
• Normal reproduction
  and lactation
• Normal ear functioning
• Gene
  expression

Question 3

Vitamin E for

Answer 3

for cleaving beta
carotene to retinol

Question 4

Protein

Answer 4

in metabolism

Question 5

Zinc

Answer 5

in interference
during their deficiency

Question 6

Diffiency of Vitamin A

Answer 6

• Toad’s skin
• Eye defects
  (xerosis, xerophthalmia)
• Impaired growth
• Depressed immune
  function
• Keratinization
• Corneal ulceration

Question 7

Toxicity

Answer 7

• 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

Question 8

Food sources

Answer 8

• Green leafy
  and yellow vegetables
• Yellow fruits
• Liver
• Organ meats
• Egg yolk
• Fish liver oils (richest)
• Butter
• Fortified margarines