major: calcium

Question 1

calcium RDA, though it increases with age

Answer 1

1000 mg/d (1g)

Question 2

• form of calcium MC in supplements/fortified, that req at least 1hr in acidic environment to release calcium (stomach, after meal)
• absorbed in this form

Answer 2

calcium carbonate

Question 3

Ca can be absorbed either via ______ utilizing vit D and CALBINDIN 9k or via ________ when calbindin 9k is saturated, paracellularly

Answer 3

active transport

passive diffusion

Question 4

Ca absorption factors:

• enhances: ____, lactose
• inhibits: ____, oxalate

Answer 4

vit d

fiber

Question 5

Ca excretion factors

• increases: ___, prot, caffeine
• decreases: ___, K, phosphorus

Answer 5

Na

estrogen

Question 6

best source of calcium

Answer 6

dairy

Question 7

two functions of calcium are __ __, along with vit A, D, K, C & B, and ___ ___ with musc contrx, nerve condux, clotting, etc

Answer 7

bone mineralization

cell signaling

Question 8

three d/o seen in HYPOcalcemia

Answer 8

tetany*
osteomalacia
osteoporosis*

Question 9

• three symptoms of calcium toxicity

- can also be dx via blood/Ca levels

Answer 9

fatigue
hallucinations
constipation

Question 10

HYPERcalcemia can occur with ____mg/d + Vit D seen with increased Ca supplements, or _____

Answer 10

2000

hyperparathyroidism

Question 11

____ stimulates PTH secretion

Answer 11

Low blood/serum Ca

Question 12

calbindin 28k is located in vivo:

Answer 12

kidneys