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FN 235 Ch 13 final
Trace Minerals
8
Nutrition
Undergraduate 3
03/17/2014

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Cards

Term
Role of Chromium
Definition
helps glucose move into cells and has role in lipid metabolism
Term
What enhances Iron absorption?
Definition
sugars (fructose, sorbitol), acids (vitamin C, citric, lactic)
meat,poultry,fish,mucin
Term
Inhibitors of Iron Absorption
Definition
Phytates, polyphenols, fiber, oxalic acid
calcium, Ca phosphate salts, zinc, Mg and nickel
Term
Transport of Iron
Definition
Transferrin delivers iron from intestines to the tissues
- iron primarily stored in liver (~60%), bone marrow and spleen
Term
Roles of Zinc
Definition
cell growth, cell replication, fertility & reproduction, hormone activity, sexual maturation, night vision, immune fnx,
-gene expression, protein metabolism, lipid metabolism, hemoglobin activity
- help regulate transcription, zinc is necessary for 2,200 transcription factors
Term
Cofactor of glutathione peroxidase
Definition
Selenium: necessary for iodine metabolism
- cofactor for regulatory enzymes
Term
Iodine Deficiency
Definition
results in goiter in adults; characterized by enlarged oh thyroid gland in neck
deficiency affects growth, development
in fetus can result in neurological cretinism, hypothyroid cretinism & thyroid failure
Term
Role of Ceruloplasmin & cofactor
Definition
is a transporter of copper in the blood & multifaceted oxidative enzyme (oxidase) and antioxidant
oxidizes minerals
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