Fat Soluble Vitamins (Exam 2) Flashcards
what is vitamin a called
retinoids
what are the 2 main sources of vit a
preformed and carotenoids
where are performed vit a found
in fish, organ meats, and dairy
where are carotenoids found
they are pigments in plants that are converted to vit a after ingestion
what veggies have carotenoids
red, orange, and yellow veggies
where can you get vit a
mainly animal sources
but plant sources have provitamins
is vit a toxicity likely ?
no
what destorys vit a
oxygen, light, heat
what are the functions of carotenoids
they are antioxidants
prevent free radicals in the eye
stimulate differentiation
what does a deficiency in vit a cause
stunted growth, keratinization of epithelian cells of skin
enlarged hair follicles
night blindness
decreased rbc
what are the two forms of vit d
d2 and d3
what are some functions of vit d
to maintain blood calcium and phosphorus
muscle function
blood pressure control
blood glucose control
what are some sources of vt d
supplements
what does d3 come from
what about d2
d3 is mainly animal sources
d2 is mainly plant sources
Vitamin D …. main point
FROM THE SUN
is d prone to cooking loss
no
what are the 2 wavelengths of sun
UVA and UVB
What does UVB do
penetrates less deeply into the skin and assists i producing vitamin d
what does UVA do
penetrates deeper into the skin and has the potential to destroy vitamin d
what is rickets
when bones become weak due to lack of vit d
how many compounds of vitamin e are there
8
what are the 2 classes of vitamin E
the tocopherols and the tocotrienols
tocopherols vs tocotrienols
pherols is the saturated side chain
trienols is the unsaturated side chain (double bonds)
roles of vitamin e
antioxidant
gene expression
cholesterol regulation, anticancer, neuroprotective
