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**Long bones: secondary center of ossification develops in epiphyses
 
**Long bones: secondary center of ossification develops in epiphyses
 
***'''Epiphyseal Growth Plate''': transverse disc of cartilate between the two ossification centers, allows longitudinal growth to continue to maturity, then closes
 
***'''Epiphyseal Growth Plate''': transverse disc of cartilate between the two ossification centers, allows longitudinal growth to continue to maturity, then closes
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[[Image:Growth plate.jpg|right|thumb|100px|<small><center>Growth plate (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]]
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[[Image:Growth plate closer.jpg|right|thumb|100px|<small><center>Growth plate magnified(Image sourced from Bristol Biomed Image Archive with permission)</center></small>]]
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***Cartilage of epiphyseal growth plate is divided into: (from right to left on the magnified image)
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**** - Resting (reserve) zone
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**** - Proliferative zone
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**** - Hypertrophic zone
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**'''Primary''' bone has not yet been '''remodelled'''
 
**'''Primary''' bone has not yet been '''remodelled'''
 
***Contains less mineral and more randomly arranged collagen fibers, trabecular organization
 
***Contains less mineral and more randomly arranged collagen fibers, trabecular organization
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