Term
| Skeletal System Componments |
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Definition
206 bones total
2 divisions
-Axial skeleton (126 bones)- bones of skull, thorax, and vertebral column
-Appendicular skeleton (80 bones)- bones of the limbs and girdles that attach them to the axial skeleton |
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Term
| Functions of the skeletal system |
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Definition
| Support, storage of minerals, blood cell production, protection and leverage. |
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Term
| 6 bone classification categories based on shape |
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Definition
flat bones
sutural bones
long bones
irregular bones
sesamoid bones
short bones |
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Term
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Definition
| growth and maintenance requires extensive blood supply |
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Term
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Definition
Osteocytes
osteoblasts
osteoprogenitor cells
osteoclasts |
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Term
| What accounts for ~2/3 bone weight? |
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Definition
| Calcium Phosphate (Ca3(PO4)2) |
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Term
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Definition
| Located where bones not heavily stressed or in many directions |
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Term
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Definition
| Created by osteoblasts in periosteum cellular layer. Strongly connect tendons, ligaments, and joint capsules to bone through periosteum. |
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Term
| Endochondral Ossification |
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Definition
| Initial bone formation in embryo begins with cartilage. |
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Term
| Intramembranous ossification |
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Definition
| Begins as mesenchymal (stem) cells differentiate into osteoblasts within embryonic or fibrous connective tissue. |
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Term
| What two things can affect abnormal bone growth and development? |
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Definition
| Endocrine and metabolic problems |
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Term
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Definition
| A disorder causing lengthened bones. Excessive cartilage formation, causes long, slender limbs and other connective tissue formalities. |
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Term
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Definition
| Over production of growth hormone before puberty. |
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Term
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Definition
| Crack or break due to extreme mechanical stress. |
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Term
| Steps of a fracture repair |
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Definition
1. large blood clot develops
2. calluses form
3. calluses replaced and dead bone removed
4. remodeling of healed bone |
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