Fat Soluble Vitamins Flashcards
(44 cards)
Visual adaptation to light and darkness
Vitamin A
Healthy skin and mucous membranes
Vitamin A
Regulate cell differentiation associated with reproduction and the immune response
Vitamin A
Vitamin A sources
- Animal sources (fish, liver oils, butter, eggs, fortified milk products)
- Fruits and vegetables (dark green and deep orange)
Vitamin A RDA FOR MALE:
900 ug RAE/day
Vitamin A RDA FOR FEMALE:
700 ug RAE/day
Vitamin A Deficiency
NIGHT BLINDESS
XEROPHTHALMIA
KERATOMALACIA
KERATINIZATION
Lack of vitamin A at the back of the eye in the retina
NIGHT BLINDESS
Lack of Vitamin A at the front of the eye that affects the cornea and can lead to total blindness
XEROPHTHALMIA
major cause of childhood blindness in the world
NIGHT BLINDESS
Softening of the cornea occurs, leading to blindness that is irrevirsible
KERATOMALACIA
Changes in cell structures throughout the body that result in hard, inflexible skin due to secretion of protein keratin
KERATINIZATION
Excess Vitamin A
- YELLOWING OF SKIN
- TERATOGENIC EFFECTS
Symptoms of excess Vitamin A
- HEADACHE
- VOMITING
- WEIGHT LOSS TO BIRTH DEFECTS
- BONE ABNORMALITIES
exist in the body and are used to synthesize this vitamin, unlike other vitamins
Vitamin D metabolites
Regulation of calcium and phosphorus in the body
Vitamin D
Regulation by the ____________ and _______________ helps maintain vitamin D balance
kidney; parathyroid glands
_____________________ enables Vitamin D synthesis in the skin
Sunlight activation
Vitamin D also works with other vitamins (___________) hormones and minerals to affect bone growth
A,C,K
Vitamin D sources
- fish, liver and oils
- Fortification of dairy products
Vitamin D recommendations
5ug/day
Vitamin D Deficiency
Rickets
Osteomalacia
Development of Osteoporosis
Associated deficiencies
Clinical deficiency state affecting children that results in structural deformities (bowed legs and pigeon breast) due to poor bone mineralization and growth retardation
Rickets
Clinical deficiency state affecting adults that result in bone weakness, fragility and increased bone fractures
Osteomalacia