Calcium is an essential mineral required for the proper functioning of numerous intracellular and extracellular processes, including muscle contraction, nerve conduction, beating of the heart, hormone release, blood coagulation, energy production and maintenance of immune function. It also plays a role in intracellular signalling and is involved in the regulation of many enzymes. BONE AND TEETH MINERALISATION
Calcium is found in bone where it is mainly complexed with other ions in the form of hydroxyapatite crystals. Approximately 1% of calcium in bone can be freely exchanged into the extracellular fluid in order to buffer changes in calcium balance.
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