Exam - Phosphorus Flashcards
1
Q
why is phosphorus deficiency and toxicity rare
A
widely distributed in food
2
Q
what is the 2nd most abundant mineral in body
A
phosphorus
3
Q
what is phosphorus found in
A
animal products
grains (phytic acid)
4
Q
where is most phosphorous absorbed
A
small intestine in ionic form
5
Q
what percentage of phosphorus in food gets absorbed
A
50-70%
6
Q
2 ways that phosphorous is absorbed in the small intestine
A
passive diffusion
saturable, carrier-mediated active transport
7
Q
phosphate binders
A
magnesium
aluminum
calcium
8
Q
what does phosphate absorption get inhibited by
A
phosphate binders
9
Q
where is phosphate found
A
bone
molecules key for metabolism
10
Q
what does phosphate play a key role in
A
protein phosphorylation
