PHOSPHATE Flashcards

1
Q

MAJOR INTRACELLULAR ANION
Component of phospholipids, nucleic acids, creatine phosphate and ATP

A

PHOSPHATE

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2
Q

Phosphate in diet is MAXIMALLY absorbed in the jejunum

A

Small Intestine

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3
Q

Percentage of Phosphate in bones

A

85%

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4
Q

Percentage of Phosphate in extracellular environment

A

15%

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5
Q

found in many parts of tissues/cells

A

Omnipresent

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6
Q

T/F. Growth Hormone increases renal excretion of phosphate

A

False, decreases renal excretion

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7
Q

T/F. The level of phosphate is INVERSELY RELATED TO CALCIUM

A

True

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8
Q

T/F. In the kidneys through the action of the PTH, calcium is absorbed while phosphate is excreted.

A

True

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9
Q

FORMS OF PHOSPHATE IN CELLS

A

Organic
Inorganic

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10
Q

Inside the cell; the principal anion in the cell

A

Organic

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11
Q

Outside the cell; blood buffer present in the plasma or serum
The one measured in tests

A

Inorganic

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12
Q

CAUSE OF HYPOPHOSPHATEMIA

A

Hyperparathyroidism (↑ renal excretion)
Vitamin D Deficiency or antacid use (↓intestinal absorption)

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13
Q

CAUSE OF HYPERPHOSPHATEMIA

A

Hypoparathyroidism
Lymphoblastic leukemia, intensive exercise, neoplastic disorders
Hypervitaminosis

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14
Q

What are the tube and specimen needed for Specimen Collection of Phosphate?

A

Serum, Plasma (lithium heparin), 24-hour urine

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15
Q

T/F. Hemolysis cause False ↑

A

True

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16
Q

Absorbance of (340 nm)

A

Ammonium phosphomolybdate complex

17
Q

Fiske-Subbarow Method
o Reducing agent:

A

Pictol (Amino Naphthol Sulfonic acid)

18
Q

Fiske-Subbarow Method
o Other reducing agents:

A

 Elon or Methyl Amino Phenol
 Ascorbic acid
 Senidine or N-Phenyl-P PhenyleneDiamineHyrochloride