骨与钙、磷代谢的关系是比较复杂的,受多种因素的影响,现将其有关的几个问题分述于下。钙、磷在人体内的含量、吸收和排泄钙、磷主要以无机盐形式存在于体内,成人含钙量为700—1400克,含磷量为400—800克。约99％以上的钙和87％以上的磷是以羟磷灰石的形式构成骨盐。每日食物中钙的含量约在0.5—1克左右,约25％—70％被吸收,其中大部分在酸度较大的小肠(如十二指肠)被吸收。决定钙吸收的主 The relationship between bone and calcium, phosphorus metabolism is more complex, subject to many factors, now several of its problems are described below. Calcium, phosphorus content in the human body, absorption and excretion of calcium and phosphorus in the form of inorganic salts exist in the body, the adult calcium content of 700-1400 grams, phosphorus content of 400-800 grams. About 99% or more of calcium and 87% or more of phosphorus constitute a bone salt in the form of hydroxyapatite. Daily food calcium content of about 0.5-1 grams, about 25% -70% is absorbed, most of which in the more acidic small intestine (such as the duodenum) is absorbed. Lord decided to absorb calcium