| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,729,848,757 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
periosteum |
Also found in: Encyclopedia, Wikipedia | 0.03 sec. |
|
periosteum /peri·os·te·um/ (-os´te-um) a specialized connective tissue covering all bones and having bone-forming potentialities.
Periosteum A fibrous vascular membrane that covers bones. Mentioned in: Tennis Elbow periosteum [per′i·os′tē·əm] Etymology: Gk, peri + osteon, bone a thick, fibrous vascular membrane covering the bones, except at their extremities. It consists of an outer layer of collagenous tissue containing a few fat cells and an inner layer of fine elastic fibers. Periosteum is permeated with the nerves and blood vessels that innervate and nourish underlying bone. The membrane is thick and markedly vascular over young bones but thinner and less vascular in later life. Bones that lose periosteum through injury or disease usually scale or die. periosteum (per´ēos´tēum), n the layer of connective tissue that varies considerably in thickness in the different areas of bone. It consists of two layers: an outer layer, which is rich in blood vessels and nerves and shows a dense arrangement of collagenous fibers, and an inner layer, the cambium, in which the fibers are loosely arranged, the cells numerous, and the blood vessels relatively sparse. During active growth, this layer of osteoblasts covers the periosteal surface of the bone. In the quiescent state in the adult, the periosteum primarily provides support. However, the inner layer retains its osteogenetic potencies and in fractures is activated to form osteoblasts and new bone. periosteum a specialized connective tissue covering all bones of the body, and possessing bone-forming potentialities. It is made up of an outer tough fibrous layer and a deeper more succulent osteogenic layer. Periosteum also serves as a point of attachment for certain muscles, tendons and ligaments. The connective tissues fuse with the fibrous layers of periosteum. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| Medical browser | ? | ? Full browser | |||
|---|---|---|---|---|---|
bone marrow infusion bone marrow reserve bone marrow suppression Bone marrow transplant bone marrow transplantation bone mass bone matrix Bone membrane bone metastases bone mineral density bone modeling Bone Nuclear Medicine Scan bone paste bone plate bone recession |
| ||||
| Medical Dictionary |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|