…D in particular plays an important role in increasing calcium and phosphorus absorption from the intestinal tract, and in promoting bone mineralization by allowing bone cells to take up the calcium that has entered the body. In long bones (long tubular bones) such as the hands, feet, and ribs, bone formation begins at both ends, i.e., the epiphysis. However, if there is a deficiency of minerals such as vitamin D, calcium, and phosphorus, bone mineralization does not occur and normal bone formation cannot occur, resulting in an increase in so-called osteoid tissue, which is not calcified. The epiphysis of the joints of the knees, elbows, and wrists becomes swollen and painful when pressed. … *Some of the terminology that refers to "osteoid tissue" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…とくにDは腸管からのカルシウム,リンの吸収を高め,さらにその体内に入ったカルシウムを骨細胞にとりこませて骨の石灰化を促進させるという重要な作用をもっている。手,足,肋骨などの長い骨(長管骨)では,その両端つまり骨端部から骨の形成が行われていくが,ビタミンDやカルシウム,リンなどの無機質が欠乏すると,骨の石灰化が起こらず正常の骨の形成ができないで,石灰沈着のない,いわゆる類骨組織osteoid tissueが増加した状態となる。ひざやひじ,手首の関節の骨端部ははれて,押さえると痛みを感じるようになる。… ※「osteoid tissue」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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