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bones pt.1
structures and functions
| Question | Answer |
|---|---|
| functions of bones | supports, protects, helps make movement possible, stores calcium, hemopoiesis |
| hemopoiesis | blood cell formation in red bone marrow |
| sesamoid bones | round |
| diaphysis/shaft | hollow tube of hard compact bone |
| medullary cavity | hollow area inside diaphysis, contains yellow bone marrow |
| epiphysis | ends of bone, spongy, contains red bone marrow |
| articular cartilage | covers and cushions epiphysis |
| periosteum | strong membrane covering bone everywhere EXCEPT JOINT SURFACE |
| endosteum | membrane lining medullary cavity |
| diploe | spongy bone layer of flat bone, sandwiched between 2 compact bones |
| cancellous | spongy |
| trabeculae | needle like threads of bone, found in epiphysis, contains red bone marrow |
| osteon | structural unit of bone |
| concentric lamella | calcified matrix in rings |
| osteocytes | bone cells and inactive osteoblasts |
| lacunae | spaces where osteocytes are found |
| canaliculi | tiny tubes that connect lacunae |
| chondrocyte | cell type of cartilage tissue |
| matrix in cartilage tissue | gel like and lacks blood vessels |