Ca+ function
Promotes transmission of NI MAJOR component of bones and teeth Regulates muscle contractions Maintains cardiac automaticity essential factor in the formation of blood clots Catalyst for many cellular activities
Ca+ Regulation
Combines c P to form the mineral salts of the teeth and bones
calcium and P lvls inversely proportional
PTH hormone stimulates release of Ca from bones and reabsorption from kidneys and intestines
Calcitonin blocks bone breakdown and lowers Ca lvls
Absorption stimulated by Vit D
Ca+ source
Milk Milk products Dark green leafy vegetables Salmon Calcium fortified foods: bread, cereals
Normal Ca+ serum lvls
Ionized 4.25-5.25
Total serum Ca+ 9-11 mg/dL
Most abundant electrolyte in the body