bones chpter 8
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21 terms
Terms | Definitions |
|---|---|
bones jobs | protection,structure,protect organs,stores minerals,bloodcell production |
types of bones | long bones, short bones, flat bones, irregular bones |
long bones | longer than they are wide |
fltat bones | thin flat and curved (STERNUM,SKULL) |
short bones | wrist,ankle |
irregular bones | verbrae,hip,some in skull |
compact bones | hard dense found in the shaft of long bones & on the outside of other bones |
haversian system (osteon) | concentric circles around large blood vessels |
spongey bone | soft bone (cancellous) red bone marrow found |
trabeculae | plates with holes in them found in flat,short and irregular bones and at he ends of long bones |
long bones | diaphysis, epiphysis, epiphyseal disc,medullary cavity, endosteum,periosteum,articular cartilage |
diaphysis | long shaft of the bone provide streghth |
epiphysis | enlarged ends of the long bone |
epiphyseal disc | (growth plate) ,band of the hyaline cartilage, longitudinal growth |
medullary cavity | hollow center of the diaphysis ( in adults filled with yellow bone marrow,in infants red bone marrow for blood cell production |
endosteum | lining of the inside of the medullary cavity |
periosteum | tough connective tissue thats wrapped around the outside of the bone,servesas a point of attachmentfor muscles,contains blood vessels that nourish the underlying bone,protects bones |
articular cartiliage | hyaline helps the bones side over each other smoothly,found on the outer surface of epiphysis |
ossification | cartilage turning into bone, hormonal control |
osteoblast | outside of bones ,bone bluiders (create bone) |
osteoclasts | inside of bones ,breaking down bone,release calicum into bloodstream this is called (bone resorption) |
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