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组成人体的化学元素有60多种,其中钙磷的含量较多,它们主要以无机盐的形式存在于体内,具有重要的生理功能,是维持人体日常生理活动所必需的常量元素。约99.3%以上的钙和85.7%以上的磷是以羟磷灰石Ca10(PO4)6(OH)2的形式构成骨盐。羟磷灰石存在于骨骼和牙齿中,是人体内含量最多的无机盐。功能及代谢Ca2+参与肌肉收缩、细胞分泌以及凝血等过程;Ca2+能降低毛细血管及细胞膜的通透性和神经肌肉的兴奋性
There are more than 60 kinds of chemical elements that make up the human body. Among them, the content of calcium and phosphorus is relatively high. They exist mainly in the form of inorganic salts and have important physiological functions. They are the constant elements necessary for maintaining the daily physiological activities of the human body. About 99.3% or more of calcium and 85.7% or more of phosphorus constitute a bone salt in the form of hydroxyapatite Ca10 (PO4) 6 (OH) 2. Hydroxyapatite is found in bones and teeth and is the most abundant inorganic salt in the body. Function and metabolism Ca2 + participates in the process of muscle contraction, cell secretion and blood coagulation; Ca2 + can reduce the permeability of capillary and cell membrane and the excitability of neuromuscular