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osteology q2
| Question | Answer |
|---|---|
| what is the purpose of a skeleton | protects internal organs, stores and releases fat, produces blood cells, stores and releases minerals, facilitate movement, supports the body |
| periosteum | thin tissue covering the outersurface of bone |
| lammalae | concretic rings |
| haversian canal | blood, lumph, and nerve fibers pass - passes thorugh the core of a haversian system |
| canaliculus | minute fluid-filled channels that radiate from haversian canals to lucunae |
| lacuna | small cavaties in lamallae, contain osteocyte. |
| osteocyte | living bone cell |
| volkmanns canal | pierce bone tissur to link haversion canals, supplying blood and lymph to the cells of long bones (horizontal) |
| haversian system/osteon | structural unit of compact bone |
| osteoblast | bone-forming cells responsible for depositing bone material; secret osteoclacin |
| osteoclast | responsible for resoption, or removal, of bone tissue |
| what is the secondary center of ossification | epiphysis |
| what is the primary center of ossification | diaphysis |
| endochondral | cartilige start of bone; prociess of different cells becoming bones in utero |
| what is bone made up of | collagen (protein) and hydroxyapatite (mineral) |
| function of collagen and hydroxapatite | felxibility and hardness, respectively |
| what are the parts of the musculoskeletal system | cartilige, tendons, ligaments |
| fibrous joint | little to no movement; skull sutures |
| cartilaginous joint | some movement; stemocostal |
| synovial | mobile; limbs |
| process/eminence | projections |
| trochanter/tuberosity/tubercole | blunt processes/eminences |
| spine/crest | linear proccesses/eminences |
| joints | articular processes/eminences |
| condyle | rounded projection |
| neck | narrwoing |
| facet | small, typically flattened, articulation |
| fossa | large, broad, and shallow depressions |
| fovea | smaller and deeper depressions |
| foramen | rounded bone opening |
| canal | tunnel like passage usually extending form a foramen |
| meatus | short. wide canal |
| what are the skeletal units | cranial v postcranial; axial v appendicular |
| supine | face up |
| prone | face down |
| what are the types of mobility | felxion/extension; abduction/adduction; rotation; pronation/supination; circumduction; elevation/depression; protraction/retraction |
| types of synovial joints | pivot, hinge, sadde, ball and socket, condyloid, plane |