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Flashcards in Phosphorus Deck (15)
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1

2nd most abundant inorganic element in the body

phosphorus

2

body stores _____g of phosphorus which makes up ___% total body weight

700g

1%

3

best source of phosphorus

animal products

4

intestinal hydrolytic enzymes cannot free ____ bound phosphates (found in plant base foods)

phylate (lack enzyme phytase)

5

in bone, found complexed with Ca as part of the bone mineral ____

hydroxyapatite

6

PTH function on phosphorus

reabsorption of phosphate from bone, stimulates excretion of phosphorus in urine via kidney

7

calcitriol function on phosphorus

promotes phosphate absorption in small intestine

8

calcitonin function on phosphorus

prevent phosphate resorption from bone

9

as a structural role: phosphorus makes up _______ of DNA and RNA

sugar phosphate backbone

10

energy storage and transfer as ________ ATP, GTP, and creatine phosphate

high-energy phosphate bonds
(phosphoanhydride bond in hydrolyzed for energy)

11

acts a _______ within cells by activating certain kinases

secondary messenger
1. PI 4,5 bisphosphate
2. IP3 (inositol 1,4,5 trisphosphate)

12

phosphorus ___ pH by removing free hydrogen ions

increases (kidney most important)

13

PTH _____ the amount of phosphate excretion

increases

14

people who take anti-acids give themselves the chance of becoming

hypophophatemic

15

phosphorus can inhibit _______ which would cause a

1-hydroxylase

reduce in calcitriol synthesis