divisons of the skeleton
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Created by:
dorispagan on May 12, 2011
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16 terms
Terms | Definitions |
|---|---|
 axial | consists of the skull, throx & vertabrae column |
| appendicular | consists of the upper & lower extremities &the shoulder &peliv girdles |
| The vertebral column | (5 regions) 26bones in 5 sections |
| 1.cervical(neck) | 7 vertebrae c1-c7 -MOST mobility -bear the least amount of weight |
| 2.thoracic (thorax) (with ribs) | 12 vertebrae T1-T12 -LEASTmobility done to anticulation (joints). with the ribs &overlapping spinous process. |
| 3.lumbar(lower back) | 5 vertebrae L1-L5 -medium mobility -largest vertebrae-bear the most weight. |
| 4.sacrum(one bone) | 1 bone formed by the fusion of 5 vertebrae approxmily about the age of 18. |
| 5.coccyx | 1 bone formed by the fusion of 3-4 vertebrae -considered vestigial(non-functional) does not do anything |
| the vertebral column. Curves of the vertebrae column | 1.prosterior/primarycurves -thoracic&sacral -develop in uters allow the fetus to curl up your born with the curves |
| 2nd curve of the vetebrae column | 2.Anterior/secondary/curves after your born -developes when the baby lifts his head & stand up. |
| the skeletal systems | 206 bones & ugametus&joints |
| long bone | for movement/designed for locomotion movements found in extremities(arms,legs,fingers |
| short bone | carpals&tarsels(hands&feet) designed to enhance agility. |
| flat bones | designed for protection Ex:cranium,sternum,ribs,scapula |
| irregular | have increased surface area for muscle |
| os conxae- (bones pelivic) (bone) | have increased surface area for muscle and ligament attachment. |
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