PHOSPHATE

Question 1

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

Answer 1

PHOSPHATE

Question 2

Phosphate in diet is MAXIMALLY absorbed in the jejunum

Answer 2

Small Intestine

Question 3

Percentage of Phosphate in bones

Answer 3

85%

Question 4

Percentage of Phosphate in extracellular environment

Answer 4

15%

Question 5

found in many parts of tissues/cells

Answer 5

Omnipresent

Question 6

T/F. Growth Hormone increases renal excretion of phosphate

Answer 6

False, decreases renal excretion

Question 7

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

Answer 7

True

Question 8

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

Answer 8

True

Question 9

FORMS OF PHOSPHATE IN CELLS

Answer 9

Organic
Inorganic

Question 10

Inside the cell; the principal anion in the cell

Answer 10

Organic

Question 11

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

Answer 11

Inorganic

Question 12

CAUSE OF HYPOPHOSPHATEMIA

Answer 12

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

Question 13

CAUSE OF HYPERPHOSPHATEMIA

Answer 13

Hypoparathyroidism
Lymphoblastic leukemia, intensive exercise, neoplastic disorders
Hypervitaminosis

Question 14

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

Answer 14

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

Question 15

T/F. Hemolysis cause False ↑

Answer 15

True

Question 16

Absorbance of (340 nm)

Answer 16

Ammonium phosphomolybdate complex

Question 17

Fiske-Subbarow Method
o Reducing agent:

Answer 17

Pictol (Amino Naphthol Sulfonic acid)

Question 18

Fiske-Subbarow Method
o Other reducing agents:

Answer 18

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