Difference between revisions of "Ameloblasts"
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| − | Ameloblasts are cells in the enamel organ which forms the tooth. They secrete [[Enamel|enamel]]. | + | |
| + | ==Overview== | ||
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| + | '''Ameloblasts''' are cells in the enamel organ which forms the tooth. They secrete '''[[Enamel|enamel]]'''. | ||
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[[Image:Ameloblast Histology.jpg|thumb|right|150px|Ameloblast Histology - Copywright RVC 2008]] | [[Image:Ameloblast Histology.jpg|thumb|right|150px|Ameloblast Histology - Copywright RVC 2008]] | ||
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| − | + | Epithelial cells line the inner surface of the enamel organ. '''Ameloblasts''' are derived from epithelium and form a single layer of very long columnar cells that are hexagonal in cross section. They have elongated, basally sited nuclei. They synthesise '''[[Enamel|enamel]]''' which forms the '''[[Crown|crown]]''' of each tooth. They maintain connections with the newly synthesised '''[[Enamel|enamel]]''' through cellular projections called '''Thomes' fibres'''. | |
| − | + | '''[[Enamel|Enamel]]''' is acellular so once the connection with the ameloblasts via the '''Thomes' fibres''' is lost (upon eruption), the [[Enamel|enamel]] matrix cannot be remodelled. | |
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[[Category:Teeth - Anatomy & Physiology]] | [[Category:Teeth - Anatomy & Physiology]] | ||
| − | [[Category:To Do - | + | [[Category:To Do - AimeeHicks]] |
Revision as of 14:06, 7 September 2010
Overview
Ameloblasts are cells in the enamel organ which forms the tooth. They secrete enamel.
Properties
Epithelial cells line the inner surface of the enamel organ. Ameloblasts are derived from epithelium and form a single layer of very long columnar cells that are hexagonal in cross section. They have elongated, basally sited nuclei. They synthesise enamel which forms the crown of each tooth. They maintain connections with the newly synthesised enamel through cellular projections called Thomes' fibres.
Enamel is acellular so once the connection with the ameloblasts via the Thomes' fibres is lost (upon eruption), the enamel matrix cannot be remodelled.