Vit A Flashcards
(8 cards)
1
Q
Is vitamin A a fat soluble vitamin or water soluble?
A
Fat soluble!
2
Q
What are the types of vitamin A?
A
• Retinol
• Beta Carotene
3
Q
What is Retinol?
A
• Pure vitamin A
• Easily absorbed by the body (liver)
4
Q
What is Beta Carotene?
A
• Pro vitamin A
• Not easily absorbed
• Must be changed into retinol before it can be absorbed by the body.
5
Q
What are the functions of Vitamin A?
A
Production of Rhodopsin: allows eyes to adapt to dim lights.
Healthy skin
Antioxidant: immune system
6
Q
What are the deficiencies of Vitamin A?
A
Night blindness
Follicular hyper keratosis
7
Q
What are the properties of vitamin A?
A
Insoluble in water
Heat stable
Destroyed by oxygen
8
Q
What is the RDA of vitamin A
A
400-950 micrograms
