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Test Three HUN
All PPTs
148
Nutrition
Undergraduate 3
11/11/2013

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Cards

Term
Basic: Iron
Definition
DNA, oxygen transport
Term
Basic: Zinc
Definition
Energy metabolism, taste/smell
Term
Basic: copper
Definition
regulation of iron metabolism, pigmentation
Term
Basic: iodine
Definition
thyroid hormone synthesis
Term
Basic: Selenium
Definition
protection against free radicals
Term
Basic: Fluorine
Definition
maintenance of teeth and bone
Term
Basic: manganese
Definition
brain function, glucose/lipid metabolism
Term
Basic: chromium
Definition
use of blood glucose, function of insulin
Term
Basic: molybdenum
Definition
metabolism of purines and pyrimidines
Term
what is the charge on ferrous and ferric iron
Definition
ferrous is 2+
ferric is 3+
Term
How does iron function in energy metabolism?
Definition
cytochromes (heme bounded to protein) in ETC
Term
what form of iron is absorbed into intestinal mucosal cells?
Definition
reduced (ferrous)
Term
TF humans have no active mechanism of getting rid of iron
Definition
true
Term
define ferritin
Definition
binds to ferritin in mucosal cells: it will store iron and eventually will get cleaved off and lost in feces
Term
what does transferrin do?
Definition
transports Fe from mucosal cells to liver
Term
What is MFP factor related to
Definition
it is in meat and it enhances the absorption of Fe
Term
What are the random things that enhance iron absorption?
Definition
MFP factor, vitamin C, stomach acid, increased need
Term
what is the best source of iron?
Definition
calf liver
Term
where is iron stored, and bound to what protein?
Definition
liver: ferritin
spleen: hemosiderin
Term
what is hepcidin?
Definition
iron regulatory hormone produced in the liver, blocks iron absorption and release it from storage site
Term
what induces hepcidin?
Definition
high iron stores, infection, inflammation
Term
what are the two types of anemia?
Definition
Term
Hemochromatosis (HH)
Definition
genetic disorder that causes excess absorption, iron overload and liver damage
fatigue and mild joint pain are early symptoms: late are liver disease, endocrine disorders and severe arthritis
Term
how do you diagnose HH?
Definition
blood tests, genotyping, liver biopsy
Term
how does avoiding coffee or tea with meals affect iron absorption?
Definition
the polyphenols in the drinks reduce absorption
Term
what are the symptoms of zinc deficiency?
Definition
dwarfism, anemia, lethargy, hyopgonadism
Term
what is the main function of zinc?
Definition
enzyme cofactor
Term
what is the best source of zinc?
Definition
red meat
Term
What is the process of zinc absorption?
Definition
bound to metallothionein in mucosal cell, transported by albumin, and excess is lost in feces
Term
what affects zinc absorption?
Definition
fiber and phytates, influenced by other minerals such as zinc
Term
what is enteropancreatic recirculation?
Definition
the cycle of zinc in the body
Term
Acrodematitis Enteropathica
Definition
autosomal/recessive metabolic disorder that is a mutation in gene encoding an intestinal zinc transporter
-->similar to acquired zinc deficiency
Term
what can cause a potential cu or fe deficiency?
Definition
zinc excess
Term
Which mineral's bioavailability is influenced by goitrogens?
Definition
iodine
Found in cabbage family plants; it inhibits iodine uptake by the thyroid but is destroyed by cooking!
Term
What mineral functions in iron metabolism?
Definition
copper
Term
what enzyme is associated with antioxidant activity in copper?
Definition
Cu/ZnSOD
Term
what enzyme is associated with collagen synthesis in copper?
Definition
lysly oxidase
Term
what enzyme is associated with ETC in copper?
Definition
dont have it potentially just copper transporters and chaperones
Term
what enzyme is associated with pigmentation activity in copper?
Definition
tyrosinase
Term
what two proteins are associated with copper?
Definition
ceruloplasm, hephaestin
Term
High intake of ____ blocks copper absorption
Definition
zinc (both utilize metallothionein)
Term
how is copper excreted?
Definition
bile
Term
what mineral is incorporated into ceruloplasmin in liver?
Definition
copper
Term
what is menke's disease
Definition
a genetic disease that is a reduced absorption of copper: causes a systemic copper deficiency
Term
Wilson's disease
Definition
excess copper: GI effects, liver damage
Term
What mineral excess causes a ring in the eye?
Definition
copper
Term
what are the functions of manganese?
Definition
enzyme cofactor: urea synthesis, pyruvate->oxaloacetate, bone formation
Term
manganese food source
Definition
pineapple
Term
what deficiency is unknown in humans?
Definition
manganese
Term
What can cause excess of manganese?
Definition
environmental factors: mines steel mills:::nervous system effects
Term
food sources of Fluoride
Definition
tea, seafood
Term
what mineral maintains glucose homeostasis and does carbohydrate and lipid metabolism?
Definition
chromium
Term
Brewers yeast provides
Definition
chromium
Term
what mineral is carcinogenic at high doses?
Definition
chromium
Term
TF supplements may help a marginal deficiency
Definition
T
Term
What does Selenium function as?
Definition
antioxidant enzyme systems
Term
What is glutathione peroxidase
Definition
it neutralizes peroxides and is associated with selenium
Term
What regulates thyroid hormone metabolism (synthesis)
Definition
selenium
Term
keshan's disease
Definition
selenium deficiency and exposure to a virus: causes cardiomyopathy
Term
how does molybdenum act
Definition
as an enzyme cofactor
Term
what are lima beans a good source of?
Definition
molybdenum
Term
how are fat soluble vitamins absorbed?
Definition
chylomicrons
Term
where are fat soluble vitamins stored?
Definition
liver, adipose
Term
what are the two forms of vitamin A
Definition
retinoids: retinol, retinal, retinoic acid
carotenoids; b-carotene, a, etc
Term
___supports reproduction, _____ participates in vision, and ______ regulates growth
Definition
retinol, retinal, retinoic acid
Term
What of vitamin A are antioxiadants
Definition
pro vitamins (carotenoids)
Term
What vitamin aids in epithelial cells?
Definition
vitamin A
Term
How does vitamin A affect gene expression?
Definition
enters cell and binds to receptor, binds to DNA, controls gene expression (transcription) and regulates cell differentiation
Term
what is xerophthalmia and what vitamin is it associated with?
Definition
permanent blindness; A
Term
what vit deficiency is keratinization?
Definition
A
Term
vitamin A excess
Definition
retinoids only: permanent liver, bone, eye damage
Term
hypercarotenemia
Definition
yellowish palsm and soles of feet
Term
What vitamin are polar bears connected to?
Definition
Vitamin A: polar bear liver has tons of preformed retinoic acid and people were getting liver damage from it
Term
what are the different forms of vitamin D and their activity
Definition
cholecaliciferol, hydroxilated in liver to 25, hydroxycholecalciferol and then in kidney gets converted to 1,25 dihydroxycholecalciferol (calcitriol) ACTIVE FORM
Term
what is the precursor to vitamin D?
Definition
cholesterol
Term
how does vit D help to regulate blood calcium levels?
Definition
increase intestinal absorption of Ca, increase kidney reabsorption and increase reabsorption from bone
Term
vit D deficiency in kids/adults
Definition
kids: rickets: growth retardation, skeletal abnormalities
adults: osteomalacia- soft bones, increased fracture risk
Term
Hypercalcemia
Definition
vitamin D excess: calcium deposits in heart, kidneys, blood vessels
Term
forms of vitamin E
Definition
tocopherols and trienols
Term
what is the most active form of vitamin E?
Definition
a-tocopherol
Term
what is the major function of vitamin E?
Definition
antioxidant that protect cell membranes: lungs, blood cells

also protects lipids
Term
food sources of vitamin E?
Definition
plant oils (almonds)
Term
What deficiency can cause hemolytic anemia
Definition
E
Term
what vitamin can interfere with vitamin K?
Definition
vitamin E
Term
forms of vitamin K : 3
Definition
phylloquinones (plants)
menaquinones (animals, bacteria)
menadione (synthetic)
Term
what activates osteocalcin?
Definition
vitamin K: bone protein synthesis
Term
what is warfarin?
Definition
poison that inhibits blood clotting
Term
vit k food sources
Definition
liver, green veggies, milk, eggs
Term
vit k deficiency
Definition
impaired clotting, abnormal bone formation
Term
what factors affect vitamin K utilization
Definition
antibiotic therapy, excess A or E, anti-coagulant medications
Term
what do infants get?
Definition
a standard vitamin K injection
Term
what is melatonin used to treat?
Definition
jet lag, disturbed sleep cycles
Term
effectives of creatine
Definition
some evidence of effectiveness
Term
what are used for arthritic and joint pain?
Definition
glucosamine, chondroitin, SAM-e: limited evidence
Term
st johns wort
Definition
mental well being, antidepressant
Term
two types of extracellular fluid
Definition
intravascular, interstitial
Term
electrolytes
Definition
Na Cl Na
Term
4 water output
Definition
urine, lungs, skin, GI tract
Term
what controls ADH?
Definition
hypothalamus and pituitary
Term
what controls the renin/angiotensin
Definition
kidney
Term
talk about the hypothalamus
Definition
it uses osmoreceptor cells to sense concentration of sodium in blood, stimulates thirst mechanism, and stimulates release of pituitary hormone ADH
Term
what stimulates thirst: 3
Definition
increase in plasma osmolality, reduction in blood volume, reduction in blood pressure
Term
what is the renin-angiotensin system triggered by?
Definition
a decrease in blood pressure
Term
what is the immediate effect of the renin-angiotensin system?
Definition
vasoconstriction
Term
what is the delayed effect of renin-angiotensin system?
Definition
aldosterone release which stimulates sodium retention
Term
hyponatremia
Definition
low blood sodium caused by water intoxication
Term
What is the most abundant mineral in the body?
Definition
Calcium
Term
TF minerals are more likely to be toxic
Definition
T
Term
What are the 4 general functions of minerals?
Definition
water and acid/base balance, nervous system function, muscle contraction, metabolic processes
Term
exracellular electrolytes
Definition
Na, Cl
Term
Intracellular electrolytes
Definition
K, P
Term
Sodium and Potassium Functions
Definition
fluid balance, muscle contraction, conduction/transmission of nerve impulses
Term
What is used to form HCl in the stomach?
Definition
Cl
Term
Functions of Chloride
Definition
fluid balance, nerve impulse conduction, HCl acid production, immune response
Term
where does potassium come from in our food sources?
Definition
unprocessed foods
processing tends to take out K and adds Na
Term
Sodium values
Definition
AI: 1,500 mg/day
UL: 2,300
DV: 3,400
Term
Potassium values
Definition
AI: 4,700 mg/day
DV: 3,500 mg/day
Term
Chloride values
Definition
AI: 2,300 mg/day
UL: 3,500
Term
Hydroxyapatite
Definition
Ca+P crystals
Term
What are the functions of calcium?
Definition
bone/tooth structure, blood clotting, nerve impulse transmission, muscle contraction, metabolic reactions
Term
osteoblasts
Definition
build
Term
osteoclasts
Definition
tear down
Term
What happens when you have low blood calcium?
Definition
parathyroid hormone is triggered: it will cause kidney to retain Ca, vitamin D activation, and increase osteoclast activity
Term
How does calcitrol help with low blood calcium?
Definition
ca absorption
Term
what happens when blood calcium is high
Definition
Calcitonin is triggered in thyroid and it inhibits osteoclasts, as well as the release of PTH and calcitriol decreases
Term
What factors increase absorption of Calcium?
Definition
growth hormones, meal, stomach acid, vitamin D, lactose
Term
Factors that decrease absorption
Definition
aging, low stomach acid, vitamin D deficiency, high P intake, fiber/phytate/oxalate intake, high protein/low Ca.
Term
Which vitamin Converts light impulses to nerve impulses
Definition
Vitamin A: rhodopsin
Term
what vitamin activates receptors in stem cells?
Definition
vitamin A
Term
what vitamin maintains health of epithelial tissues?
Definition
vitamin A
Term
What type of vitamin A acts as an antioxidant?
Definition
carotenoids
Term
Why do we use retinol activity equivalents?
Definition
b-carotene isn't completely absorbed
Term
How does keratinization occur in skin cells?
Definition
in vitamin A deficiency, the epithelial cells secrete keratin
Term
what regulates blood calcium levels and phosphorus?
Definition
vitamin D
Term
what vitamin affects insulin secretion?
Definition
vitamin D
Term
high source of vitamin D
Definition
salmon
Term
which vitamin is vulnerable to heat and oxidation?
Definition
vitamin A
Term
deficiency of what can lead to ineffective blood clotting?
Definition
calcium
Term
excess of Ca
Definition
increased risk of oxalate-type kidney stones, interference with absorption of other minerals
Term
What does phosphorus make up? 3 things
Definition
ATP, phospholipids (plasma membrane) DNA/RNA
Term
What are the other 2 functions of P
Definition
pH control (carbonic acid) and bone structure (hydroxyapatite)
Term
phosphorus food sources
Definition
dairy, grains, meat, processed foods
Term
Magnesium function
Definition
enzyme cofactor, activates ATP, nerve/lung/cardiac function, K/Ca metabolism -> bone health
Term
magnesium deficiency
Definition
irregular heartbeat, weakness/muscle pain, hypertension/heart attack, develops slowly, alcoholics at risk
Term
excess magnesium
Definition
kidney failure
Term
blood pressure ranges: normal, prehypertension, hypertension
Definition
normal: < 120/80
prehypertension 120-139/80-89
hypertension at or above 140/90
Term
when can calcium citrate be taken?
Definition
any time of day
ca carbonate can only be taken with meal
Term
USP or CL on Ca supplement label
Definition
United States Pharmacopeia (USP) or Consumer Lab
(CL) abbreviations
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