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UARK Nutrition Ch. 7-8 test 3

Terms in this set (76)

Essential, noncaloric, organic
Needed in small amounts in diet
some have multiple names
Vitamin
Role of vitamins
Involved in processes needed for:
digestion
absorption
metabolism
building body structures
Absorption of water soluble vitamins
blood
Absorption of fat soluble vitamins
lymph
Fat soluble vitamins
Vitamin A,D,E,K
Water soluble vitamins
B vitamins and Vitamin C
Requirements of fat soluble vitamins
needed in periodic doses because the body can draw on its stores
Requirements of water soluble vitamins
needed in frequent doses because the body doesn't store most of them to any extent
Toxicity of fat soluble vitamins
toxicities are likely from supplements but occur rarely in food
Toxicity of water soluble vitamins
toxicities are unlikely but possible with high doses of supplements
Excretion of fat soluble vitamins
not readily excreted; tend to build up in the tissues
Excretion of water soluble vitamins
readily excreted in the urine
Transport and storage of fat soluble vitamins
must travel with protein carriers in watery body fluids; stored in the liver or fatty tissue
Transport and storage of water soluble vitamins
travel freely in watery fluids; most are not stored in the body
What is vitamin A precursor?
beta-carotene
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