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钙作为人体矿物元素的排头兵在人类生命的进程中始终扮演着主角。从精子卵子结合到骨骼发育、肌肉收缩、心脏泵动以及大脑思维运转等人体一切新陈代谢的活动,钙作为重要能源发挥着不可替代的作用。但是钙又是一种在人体内不能合成的外源性物质,每完成一次生理作用后即被代谢到体外,因此需源源不断地从外界补充。成人体内钙含量约为1200克,其中99％存在于骨骼和牙齿之中,约1％的钙(约12克)以游离或结合的离子
As the vanguard of human mineral elements, calcium plays a leading role in the process of human life. From the sperm egg to bone metabolism, muscle contraction, heart pumping and brain movement and other brain metabolic activities of all human metabolism, calcium as an important energy plays an irreplaceable role. However, calcium is an exogenous substance that can not be synthesized in the human body and is metabolized to the body after each physiological effect, so it needs to be replenished continuously from the outside world. About 1200 grams of calcium is found in adults, 99% of which is found in bones and teeth. About 1% of calcium (about 12 grams) is expressed as free or bound ions