钙 ,人们称为生命元素。它是人体中含量最多的矿物质元素 ,约占人体重的 2 %。钙 99%集中于骨骼和牙齿之中 ,其余存在于细胞外液和血液中。钙在人的生命活动中的作用 ,除维持骨骼的动态平衡外 ,还参与整个生命过程的新陈代谢 ,人体内每个细胞的功能都离不开钙。比如 ,没有钙的 Calcium, known as the element of life. It is the most abundant mineral elements in the human body, accounting for about 2% of body weight. Calcium 99% concentrated in the bones and teeth, and the rest in the extracellular fluid and blood. The role of calcium in human life activities, in addition to maintaining the dynamic balance of bone, but also participate in the metabolism of the entire life process, the function of each cell in the human body are inseparable from calcium. For example, no calcium