Ionized calcium in the plasma has many important functions including formation of bones and teeth, coagulation of blood, contraction of muscles, cardiac action, milk production, relay of electrical and chemical messages that arrive at a cell’s membrane to the biochemical machinery within the cell, keeping the membranes of the cell intact and in the metabolism of enzymes and hormones.
It also plays a crucial role in the transformation of light to electrical impulses in the retina.
In the bones, two minerals, calcium and phosphorus, are combined to give strength and firmness to the skeleton or bony structure of the body. Many chemical reactions of the body require both calcium and phosphorus. Hence there is a constant interchange of these minerals between the bones and the blood stream.
Young mothers need extra calcium, particularly during pregnancy and the nursing period.
Calcium is important for children and young people whose bones are growing rapidly.
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