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Class of Bones
| Question | Answer |
|---|---|
| compact bone | smooth and homogenous |
| spongy bone | composed of small trabeculae (bars) of bone and lots of open space |
| long bones | are much longer than they are wider, generally consisting of a shaft with heads at either ends |
| short bones | typically cube shaped, and they contain more spongy bone than compact bone |
| flat bones | generally thin, with two waferlike layers of compact bone sandwiching a layer of spongy bone between them |
| irregular bones | bones that do not fall into one of the proceeding categories |
| tuberosity | large rounded projection; may be roughened |
| crest | narrow ridge of bone; usually prominent |
| trochanter | very large, blunt, irregularly shaped process (the only examples are on the femur) |
| line | narrow ridge of bone; less prominent than a crest |
| tubercle | small rounded projection or process |
| epicondyle | raised area on or above a condyle |
| spine | sharp, slender, often projected pointed |
| process | prominence or projection |
| head | bony expansion carried on a narrow neck |
| facet | smooth, nearly flat articular surface |
| condyle | rounded articular projection |
| ramus | armlike bar of bone |
| sinus | space within a bone, filled with air and lined with mucous membrane |
| meatus | canal like passageways |
| fossa | shallow, basinlike depression in a bone, often serving as an articular surface |
| groove | furrow |
| fissure | narrow, slit like opening |
| foramen | round or oval opening through a bone |
| periosteum | fibrous membrane covering a long bone |
| diaphysis | shaft of a long bone |
| endosteum | inside lining of a bone |
| articular cartilage | covers the epiphyseal surface in place of periosteum at joint locations |
| epiphysis | end of a long bone |
| haversian canal | runs parallel to the long axis of the bone and carries blood vessels, nerves, and lymph vessels through the bony matrix |
| lamellae | rings of calcified extracellular membrane |
| lacunae | mature bone cells in chambers arranged in concentric circles around the central canal |
| canaliculli | tiny canals radiating outward from a central canal to the lacunae of the first lamellae and then from lamallae to lamallae |
Created by:
wacdmc
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