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Bone histology
Chpt 5
| Question | Answer |
|---|---|
| acounts for 2/3 of bone wieght | Calcium phosphate |
| • Ca(PO4)2 crystals are | v. strong,v. strong inflexiblewithstand compressionbut will shatter |
| Collegen fibers | o Tougho Flexible o Tolerate stretchingo Will bend when compressedo Provides framework form mineral crystal formation |
| another name for mature bone cells | osteocytes |
| osteocytes come from | osteoblasts |
| function of osteocytes | directs the release of Ca from bone to bone And deposition of CaNa’s in bone matrix |
| Location of osteocytes | lacunae (small chamebers) btwn the calcified matrixLacunae are connected by canaliculi (sm canals) through outhe bone matrix |
| another word for lacunea | small chambers, houses the osteocytes |
| another word for canaliuli | canals or vessels connecting the lacunea |
| four types of cells found in bone | osteocytes, osteoblasts, osteoprogenitor, osteoclasts |
| cubidal in shape secretes osteoid- stuff that is mineralized and becomes the bone matrix | Osteoblasts |
| Cell that is responsible for new bone production | osteoblasts |
| another word for new bone production | osteogenesis |
| another word for mesenchyme cells found in the innermost layer of the periosteum and in the endosteum lining of the marrow cavities | osteoprgenitor cells |
| cells that can differenciate into osteoblasts | osteoprogenitor cells |
| osteoclasts | large/ giant cells w/ 50 nuclei or more. |
| the bone cell responsible for dissolving the bone matrix and releasing anino acids, calcim and phosphates | osteoclasts |
| another word for "the erosion of bone matrix" | osteolysis |
| Compact bone | dense bone, forms the walls of bone |
| spongy bone | internal layer of bone, surrounds bone marrow |
| osteon or Haversian system is found in | the compact bone |
| Funtion of compact bone | houses the haversain system which carries the blood ( blood vessels) exhchange sight for blood |
| central canals vs. perforating canals (aka volkman) | central=paralell, perforating=perpendicular |
| function of perforating canals/ volkman canals | delivers blood to the osteons |
| another word for new bone production | osteogenesis |
| another word for mesenchyme cells found in the innermost layer of the periosteum and in the endosteum lining of the marrow cavities | osteoprgenitor cells |
| cells that can differenciate into osteoblasts | osteoprogenitor cells |
| osteoclasts | large/ giant cells w/ 50 nuclei or more. |
| the bone cell responsible for dissolving the bone matrix and releasing anino acids, calcim and phosphates | osteoclasts |
| another word for "the erosion of bone matrix" | osteolysis |
| Compact bone | dense bone, forms the walls of bone |
| spongy bone | internal layer of bone, surrounds bone marrow |
| osteon or Haversian system is found in | the compact bone |
| Funtion of compact bone | houses the haversain system which carries the blood ( blood vessels) exhchange sight for blood |
| central canals vs. perforating canals (aka volkman) | central=paralell, perforating=perpendicular |
| function of perforating canals/ volkman canals | delivers blood to the osteons |
| The structure of spongy bone consists of | trabuculae. |
| another word for parellel lamelle that forms "thin branching plates" found in spongy bone | trabuculae |
| How are nutrients exhchanged in the the spongy bone | through diffusion |
Created by:
miaadriano
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