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NTDT exam 3

Terms in this set (123)

how are water soluble vitamins absorbed in the gut?
directly enter the blood
how are fat soluble vitamins absorbed in the gut?
first enter lymph, then blood
how do water soluble vitamins transport in blood?
travel freely
how do fat soluble vitamins transport in blood?
require transport proteins
what is the risk of deficiency for water soluble vitamins?
higher risk because stores are limited
what is the risk of deficiency for fat soluble vitamins?
takes much longer to develop because they are stored in adipose tissue
what is the risk of toxicity for water soluble vitamins?
readily excreted by the kidneys
what is the risk of toxicity for fat soluble vitamins?
higher risk because they can accumulate in the body
fat soluble vitamins
Vitamins A, D, E, K
vitamin A function
vision, immunity
2 types of vitamin A
retinol and beta-carotene
dietary sources of vitamin A
liver, fortified milk (retinol)
orange and green vegetables (beta-carotene)
vitamin A deficiency
night blindness and vision loss
vitamin A toxicity
supplements only
vitamin D function
bone health, calcium absorption
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