英和和英

出典:『Wikipedia』 (2011/06/09 16:15 UTC 版)

英語による解説

引用

There are five types of bone cells. this is the most important one the nuclus

• Osteoblasts - These are commonly called bone-forming cells. They secrete osteoid, which forms the bone matrix. They also begin mineralization, and are unable to divide.
• Osteocytes - A mature osteoblast which no longer secretes matrix, yet is surrounded by it. Maintains metabolism, and participates in nutrient/waste exchange via blood. Unable to divide.
• Osteoclasts - These function in resorption and degradation of existing bone, the opposite of osteoblasts. Monocytes (a type of white blood cell) fuse together to create these huge cells, which are concentrated in the endosteum.
• Osteoprogenitors - Immature cells which differentiate to make osteoblasts. May divide.
• bone-lining- quiescent osteoblasts covering the bone