A plan for--or a summary of--a writing project or speech. An outline is usually in the form of a list divided into headings and subheadings that distinguish main points from supporting points. Most word processors contain an outlining feature that allows writers to format outlines automatically.
Osteoblasts are bone-forming cells that descend from osteoprogenitor cells. They form a protein mixture known as osteoid, which mineralizes to become bone. Osteoid is primarily composed of Type I collagen.Osteoblasts also manufacture hormones, such as prostaglandins, to act on the bone itself.steocytes: Osteocytes are mature bone cells that originate from osteoblasts, which have migrated into and become trapped and surrounded by bone matrix, produced by themselves. The spaces they occupy are known as lacunae.
One of the largest determinants in bone health is the ability for the cells in the process of bone building to actively continue to break down old bone and produce new bone. There are two cells in bone responsible for building bones: osteoblasts and osteoclasts.An osteoblast (from the Greek âOsteoâ meaning âboneâ and âblastâ meaning âgermâ or âembryonic) create new bone and an osteoclast breaks down and recycles old bone.here are two cells in bone responsible for building bones: osteoblasts and osteoclasts. An osteoblast (from the Greek âOsteoâ meaning âboneâ and âblastâ meaning âgermâ or âembryonic) create new bone and an osteoclast breaks down and recycles old bone.