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人的体形靠骨骼来支撑,骨主要是由有机质和矿物质构成。其中有机质是骨胶原,象混凝土框架中的钢筋一样,可增加骨的韧性。骨中的矿物质占到干燥骨重量的60％,是由一种叫做羟磷石灰结晶的含钙矿物质组成,可以提高骨的硬度,类似混凝土框架中的水泥。我们都知道儿童缺钙可患软骨病,主要是由于骨中含钙矿物质缺少的缘故。成年人尤其是老年女性骨骼中钙盐也可减少,但老年人在钙盐减少的
Human body supported by the skeleton, the bone is mainly composed of organic matter and minerals. The organic matter is collagen, which, like concrete in concrete frames, increases the toughness of the bone. The minerals in the bones make up about 60% of the dry bone weight and consist of a calcium-rich mineral called hydroxyladenite crystals which increases the hardness of the bone, similar to the cement in concrete frames. We all know that children with calcium deficiency can suffer from osteochondrosis, mainly due to the lack of calcium minerals in the bone. Calcium can also be reduced in adults, especially in older women, but in elderly people with reduced calcium