Chapter 10: Macromineral (Phosphorus)

Question 1

phosphorus - characteristics

80% of the body’s phosphorus if found in bone as _____ (2)

Answer 1

calcium phosphate and hydroxyapatite

Question 2

phosphorus - characteristics

acts as a cofactor in a number of enzyme systems involved in cho, chon, and fat metabolism

Answer 2

-

Question 3

phosphorus - characteristics

important as components of _____ in cell membranes, lipoproteins, etc. and is involved in renal excretion of hydrogen ions

Answer 3

phospholipids

Question 4

phosphorus - function

calcification of _____ (2)

Answer 4

bones and teeth

Question 5

phosphorus - function

metabolism of _____ by majority of all cells

Answer 5

energy

Question 6

phosphorus - function

important in the absorption and transport of nutrients

Answer 6

-

Question 7

phosphorus - function

an essential components of (3), adenosine diphosphate, coenzymes, and some vitamins

Answer 7

dna, rna, atp

Question 8

phosphorus - function

2 types of nucleic acids

Answer 8

dna and rna

Question 9

phosphorus - function

a major component of _____ (2) (phospholipids)

Answer 9

cell membrane and intracellular organelles

Question 10

phosphorus - function

regulation of _____ balance

Answer 10

acid-base

Question 11

phosphorus - absorption and metabolism

released by the action of intestinal enzymes _____

Answer 11

phosphatases

Question 12

phosphorus - absorption and metabolism

absorbed in the blood with the help of _____

Answer 12

vitamin d

Question 13

phosphorus - absorption and metabolism

blood phosphorous is regulated by the _____ that interacts with vitamin d to control the absorption of the mineral

Answer 13

parathyroid gland

Question 14

phosphorus - absorption and metabolism

lack of vitamin d will reduce both _____ (2) absorption

Answer 14

calcium and phosphorus

Question 15

phosphorus - absorption and metabolism

factors affecting ca absorption and metabolism are the same with phosphorus

Answer 15

-

Question 16

phosphorus - absorption and metabolism

some minerals such as _____ (2) may bind with phosphorus, forming insoluble phosphates unavailable for absorption

Answer 16

aluminum and strontium

Question 17

phosphorus - deficiency

consuming prolonged use of non-absorbable antacids which bind dietary phosphorus prevents absorption

symptoms: weakness, anorexia, malaise, and pain in the bones

Answer 17

-

Question 18

phosphorus - deficiency

alcohol abuse, kidney disorders, prolonged vomiting or diarrhea

Answer 18

-

Question 19

phosphorus - populations/conditions with increased risk of deficiency

alcoholics, premature infants

Answer 19

celiac disease, sprue, insulin injections, hyperparathyroidism

Question 20

phosphorus - toxicity

associated with certain disease stated such as hyperparathyroidism or chronic renal failure

Answer 20

hyperphosphatemia

Question 21

phosphorus - toxicity

often associated with hyperphosphatemia, since excessive phosphate interferes with calcium utilization

signs: tetany and convulsions

Answer 21

hypocalcemia

Question 22

phosphorus - interrelationship w/ other nutrients

essential to ensure optimum phosphorus absorption

Answer 22

sodium

Question 23

phosphorus - interrelationship w/ other nutrients

increase in _____ consumption decreases phosphorus absorption

Answer 23

magnesium

Question 24

phosphorus - recommended intake

for children (1-2 y/o) male and female

Answer 24

460 mg

Question 25

phosphorus - recommended intake

for children (3-9 y/o) male and female

Answer 25

500 mg

Question 26

phosphorus - recommended intake

for children (10-18 y/o) male and female

Answer 26

1,250 mg

Question 27

phosphorus - recommended intake

for adults (19 - >70 y/o) male and female

Answer 27

700 mg

Question 28

phosphorus - sources

meat, fish, poultry, glandular organs, egg yolk, milk, cheese, beans, nuts and seeds, whole grain cereals

Answer 28

food sources