Phosphorus Flashcards

1
Q

is it a trace element, vitamin, or mineral? Phosphorus

A

mineral

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2
Q

whats is it converted from? Phosphorus

A

ATPP –> phosphorus

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3
Q

is it the second or first most abundant mineral in the body? Phosphorus

A

second

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4
Q

what does it do in the bones and teeth? Phosphorus

A

Hydroxyapatite crystals of bone and teeth

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5
Q

how much are in the bones and teeth? Phosphorus

A

85-90%

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6
Q

how much are in the muscles? Phosphorus

A

5-7%

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7
Q

besides the the bones, teeth, and muscles, where else is it in the body? Phosphorus

A

body fluids

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8
Q

what are the Levels in body controlled by? Phosphorus

A

excretion, not absorption

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9
Q

how much is absorbed? Phosphorus

A

70 %

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10
Q

what does Vitamin D & parathyroid hormone do to it? Phosphorus

A

increases rate of resorption from kidneys

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11
Q

what are its five functions? Phosphorus

A

Regulates release of energy, Helps absorption & transport of nutrients, Structural, Calcification of bones & teeth, Regulates acid-base balance

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12
Q

what are the details of its function as: Helps absorption & transport of nutrients? Phosphorus

A

Phosphorylation activates i.e., TPP, PLP

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13
Q

what are the details of its structural function? Phosphorus

A

Phospholipid membranes

1 g P needed for every 17 g nitrogen retained

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14
Q

is toxicity rare and what causes it? Phosphorus

A

Rare, except with consumption large quantities of antacids

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15
Q

what are the details of what causes toxicity? Phosphorus

A
  • Kidney disease or too many vitamin D supplements

- Anticonvulsants, phenobarbital

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16
Q

what are the six things that can happen with toxicity? Phosphorus

A

Fatigue, loss of appetite, bone demineralization, muscle weakness, drawing out Ca from bones, with calcification of non skeletal tissues (kidney)

17
Q

whats the DRI? Phosphorus

A

700 mg

18
Q

whats the UL? Phosphorus

A

4,000 mg

19
Q

what are the five best food sources? Phosphorus

A

 Foods rich in proteins  Food additive for

preservation  Phosphoric acid, soda, cheese