Nutrtion 2 Flashcards

0
Q

What does active transport of calcium use?

A

Calbindin 9k

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1
Q

Calcium absorbed by?

A

Active transport and passive diffusion

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2
Q

Fxns of calcium

A

Bone mineralization and cell signailing

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3
Q

Best source of calcium?

A

Dairy

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4
Q

Hypo calcemia causes?

A

tetany and osteoprosis

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5
Q

Hypercalcemia symptoms?

A

fatigue, hallucination and constipation

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6
Q

Causes of hypercalcemia?

A

Hyperthyroidism and increased calcium intake

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7
Q

Fxn of phosphorus

A

enzyme regulation (covalent modification)
phospholipid
ATP and cAMP

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8
Q

Best sources of phosphorus

A

Animal products

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9
Q

Hypophosphetemia causes?

A

Arrythmias

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10
Q

Hyperphosphetemia is connected to?

A

Hypo calcemia

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11
Q

Magnesium sources

A

Plants

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12
Q

fxns of magnsium

A

cofactor, muscle relaxer and PTH secretion

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13
Q

Hypermagnesmia causes

A

slurred speach and migraines

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14
Q

Hypomagnesmia causes?

A

Muscle weakness

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15
Q

Best source of sodium?

A

Salt NACL

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16
Q

Sodium fxn?

A

Fluid balance and nerve transmission

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17
Q

Hyponatremia?

A

Difficiency of sodium that causes muscle cramps

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18
Q

Hypernatremia is?

A

Excess sodium. Causes hypertension

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19
Q

Potassium fxns

A

Fluid balance and nerve transmission

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20
Q

What three minerals fxn in fluid balance and nerve transmission?

A

Na,K,Cl

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21
Q

Source of chloride?

A

salt NaCl

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22
Q

Hyperkalemia

A

too much K, causes arrythmias

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23
Q

Hypokalemia

A

not enough K, causes arrythmias

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24
best sources of K
banana, canteloupe, sweet potatoes
25
Major mineral intake?
greater than 100mg/d
26
Chloride fxns
HCl, fluid balance and nerve transmission
27
mineral absorption inhibited by?
Phytate, oxalate, tannins
28
Iron tansported out of enterocyte by_______ and uses ____ to accomplish this.
Ferroportin, uses copper
29
Non heme iron sources?
plants and supplements
30
Non heme iron digested by_____ and requires_____to do this?
Ferrireductase and it requires vit C
31
Nonheme iron absorbed by?
facilitated diffusion, DMT
32
Iron toxicity causes?
hemochromatosis and organ damage
33
iron fxns
cytochromes and oxygen transport
34
Storage protein of iron?
ferritin
35
ferritin found in?
liver, spleen, bone marrow, and enterocyte
36
Iron deficiency symptoms?
Pallor, fatigue and decreased immune system.
37
Iron deficiency causes?
Microcytic anemia
38
People most at risk fro iron dificiency?
6mo-2yr, boys 10-19, male runners, women 10-44, all female athletes.
39
Iron dificiency correlates with what other mineral?
Copper
40
what transports in blood?
transferrin
41
What is more absorbed heme or non heme?
heme
42
Heme absorbed by?
facilitated diffusion, Hcp1
43
heme sources?
fish and beef
44
A difficiency of what 3 minerals causees decreased immune system?
Copper iron and zinc
45
Best source of zinc?
seafood
46
zinc fxns
folate digestion and heme
47
zinc deficiency
decreased taste, dermititis and decreaed immune system.
48
Zn toxicity cause?
metallic taste
49
zinc supplements
decreased absorption, folic acid.
50
copper toxicity
Wilson's disease
51
Wilson's disease causes?
keyser fleisher rings
52
copper fxns
atp, collagen crosslinking, ferroportin.
53
Copper deficiency
Skin and hair depigmentattion, decreased immune system. | Genetic copper def is menkes syndrome
54
best source of selenium
brazial nuts
55
Selenosis causes?
Too much selenium and causes brittle nails
56
selenium fxn
cofactor for glutathione peroxidase and t4-t3
57
iodide toxicity
burning mouth and throat, hypothyroidism
58
iodide def
goiter
59
Selenium def?
``` Keshans disease (heart disease in kids), Kashin becks disease (osteoarthrits), insulin resistance (prevalent in china and mongolia). Selenium deficiency depends on soil content. ```
60
Crommium fxns
insulin secretion
61
crommium def causes?
insulin resistance, prevalent in mongolia and china
62
iodide fxns
part of t3 and t4
63
manganese fxn
cofactor
64
molybdenum fxn
cofactor in s metabolism and uric acid syntheisis
65
best source of molybdenum
plants
66
Molybdenum toxicity causes?
gout
67
flouride toxicity
mottling of teeth and pitting of bones
68
fxn of flouride
bone mineralization
69
sources of flouride
flouridated water and toothpaste
70
flouride def causes
cavities and osteoprosis
71
what enhances mineral absorbtion
acidic environment
72
trace mineral amount
less than 100 mg/d
73
What minerals aid in bone mineralization?
folate, calcium, phosphorus, sodium
74
What is linked to hypocalcemia
hyperphosphetemia, hypernatremia, hypomagnesmia