minerals

Question 1

what is the normal plasma level of calcium

Answer 1

9-11 mg/dl

Question 2

what is the classification of minerals n the require amount of each

Answer 2

major >100mg/day (macronutrients) & trace elements (micronutrients) <100 mg/day

Question 3

what are the dietary sources of calcium

Answer 3

milk & its products, egg yolk, cabbage, nuts

Question 4

what is the site of calcium

Answer 4

upper small intestine by calcium binding protein (CBP)

Question 5

factors that increase calcium absorption

Answer 5

calcitriols (active vit D) - acidic Ph (pH intestinal contents) -
lactose and high protein diet

Question 6

factors that decrease calcium absorption

Answer 6

Alkaline Ph (pH intestinal contents) - phytate, oxalate, tanic acid (tea) & fatty acids

Question 7

what are the functions of calcium

Answer 7

B; calcification of Bone and teeth
Blood coagulation
M; Membrane permeability
Muscle contraction and nerve excitability
S; Second messenger of many hormones
for activity of Some enzymes as lipase, phosphorylase & a-amylase enzyme