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32 Cards in this Set
- Front
- Back
Thiamine (B1) functions (4) |
1) TDP: Required magnesium-coordinated coenzyme for decarboxylation of alpha ket acids 2) synthesis of pentoses and NADPH 3) converts carbs to CO2 and energy 4) TTP: normal function of NS, skeletal muscles, and heart |
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Riboflavin (B2) functions (5) (why does B6 needs B2?) |
1) Precursor for synthesis of FAD and FMN; 2) required for function of the ETC and redox reactions; 3) formation of Acetyl CoA 4) needs B2 to covert B6 to its active form (FMN) 5) synthesis of folate and catabolism of choline |
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Niacin (B3) functions (5) |
1) AA, CHO, and fat metaboism 2) NAD: releases adenosine diphosphate ribose to repair DNA and calcium mobilization 3) NADPH: required activation of folate 4) lipids/cholesterol metabolism 5) NE and epinephrine synthesis |
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Folate functions (2) |
1) prevents neural tube defects; needed for 2) synthesis of deoxythymidine for DNA replication accepting one-carbon groups generated from amino acid metabolism Bioavailability increases when ingested as folic acid |
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Biotin functions (3) (also, what can reduce biotin absorption) |
1) Metabolism of carbs, fats, and protein ( acetyl coa, pyruvate, and propionyl coa carboxylase) 2) CO2 transport 3) Healthy hair and nails Poultry eggs contain avidin which reduces biotin absorption |
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Pantothenic acid (B5) functions (3) |
1) sterol synthesis Utilization of fats and carbs, 2) adrenal hormones and metabolism of RBCs 3) coenzyme A--fatty acid energy synthesis (release) |
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Pyridoxine (B6) functions what is the compound to perform coenzyme functions? |
1) Protein and amino acid metabolism, 2) neurotransmitter synthesis, 3) immune system function, hormone synthesis, 4) heme synthesis, differentiation of RBCs Must be phosphorylated to pyridoxal-5'-phosphate (PLP) to perform coenzyme functions |
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Cobalamin (B12) functions (2) what limits B12 absorption? |
1) Healthy blood formation, 2) NS function Inadequate intrinsic factor limits B12 absorption in small intestine |
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Vitamin C (ascorbic acid) functions (5) |
1) Collagen, ===proline-->hydroxyproline-->collagen 2) carnitine, and neurotransmitter synthesis synthesis of proline, tryptophan, dopamine, and tyrosine, 3) iron absorption, 4) convert cholesterol into bile acid 5) protect vitamin E and folic acid |
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Vitamin A functions |
1) Vision (Retinaldehyde) 2) normal growth and reproduction (retinol) 3) epithelial integrity (retinoic acid) 4) wound healing, (reverse the inhibitory effects of corticosteroids on wound healing.) resistance to infections, , prevention of cancer (promotes cell differentiation) |
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Vitamin D functions |
(with its active form of 1,25-dihydroxyvitamin D) Required for intestinal absorption of calcium and phosphorus, formation of bone and teeth, proper bone remodeling pleiotropic effect pleiotropic effect Ingested as cholecalciferol; converted to 25-hydroxycholecalciferol in the liver |
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Vitamin E functions |
1) Major intramembranous antioxidant that prevents oxidation 2) maintain cell memebrane integrity 3) works along with selenium and vit c against oxidation reduces oxidized vitamin C and beta-carotene; may prevent cancer and CV disease; needed for immune function and reproductive function |
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Vitamin K functions |
#Required cofactor in formation of clotting factors #bone health #cosusbstrate in the posttranslational carboxylation of proteins at designated glutamic acid residues (act as clotting factor) |
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Calcium functions |
Blood clotting, release/storage of NT/hormones, uptake/binding of amino acids, absorption of B12, gastrin secretion, nerve impulses and muscle contractions, regulation of BP, primary mineral component of skeleton Calcium citrate is most bioavailable form |
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Chlorine function |
main extracellular anion and primary regulator of fluid/electrolyte acid-base balance |
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Magnesium functions Which is most bioavailable? |
Stabilizes ATP structure, enhances calcium metabolism, major mineral component of bone and tooth architecture, required cofactor in over 300 enzyme reactions, acid-base balance, parathyroid hormone function, heart beat regulation
Magnesium citrate most bioavailable form (least prone to bowel upset) |
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Phosphorus functions |
Regulation of energy metabolism, provides large amounts of biochemical energy in forms of ATP, ADP, GTP, cAMP, major component of bone/tooth structure, component of membrane phospholipids, required for proper kidney function |
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Potassium functions |
Major intracellular cation electrolyte, primary regulator of cellular osmotic pressure, cell membrane potential/charge, normal renal function, acid-base balance |
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Sodium functions |
Major extracellular electrolyte, primary regulator of extracellular fluid volume, membrane potential, active transport across cell membranes, acid-base balance, body fluids osmolarity, acid-alkaline balance |
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Sulfur functions |
Integral part of glutathione, insulin, keratin, and other glycosaminoglycans in skin, cartilage, and connective tissue |
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Chromium functions (2) |
#Enhances effect of insulin -->amplifying tyrosine kinase activity #lipid metabolism |
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Copper functions |
#oxidation-reduction and electron transfer for oxygen #ceruloplasmin: Manganese and ferrous oxidation ( Fe3-->Fe2) iron metabolism and erythropoiesis, glucose and cholesterol metabolism, iron absorption, formation of bone marrow, pigmentation of hair, , connective tissue repair, maintenance of myelin, skeletal mineralization, |
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?? Fluorine functions |
Prevents pregnancy anemia, reduces formation of acid in the mouth caused by carbs, contributes to hardening tooth enamel, contributes to stability of bone matrix, required for growth and fertility |
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Iodine functions (3) |
#thyroid hormones (T3 and T4) # cell metabolism #tissues growth |
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Iron functions |
Most abundant micro mineral in body; component of hemoglobin and myoglobin, oxygen transport within blood/muscle; redox reactions important component of cytochromes for the oxidative production of cellular energy as ATP) |
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Manganese functions (3) |
1) arginase (metalloenzymes): urea formation 2) CHO synthesis via pyruvate 3 reproduction and nerve cell function Bone mineralization/demineralization, |
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Molybdenum functions |
Required cofactor for xanthine, aldehyde, and sulfite oxidases; electron transfer agent in redox reactions |
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Selenium functions (4) |
1) Component of glutathione peroxidase; 2) eliminate hydrogen peroxide 3) thyroid/iodine matabolism 4) metabolism of prostaglandins |
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Zinc deficiency |
1) impairs cell-mediated immune function, 2) delayedwound healing and memory, loss of taste and smell acuity, brittle nails, skin lesions, diarrhea, anorexia, growth failure, sterility 3) glucose intolerance |
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Zinc functions |
#cellular metabolism #catalyst for enzymes #wound healing, insulin synthesis, immune control #zinc -finger motif in proteins #gene expression |
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choline function |
#transports lipids as acetylcholine #cell membrane integrity, methyl metabolism, transmembrane signaling, lipid cholesterol metabolism |
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fluoride function (2) |
#bone minearlization and hardening tooth enamel #protect calcified tissues against demineralization -->forming fluorapatite crystals |