The osteon or haversian system ən (named for Clopton Havers) is the fundamental functional unit of much compact bone. Osteons are roughly cylindrical structures that are typically several millimeters long and around 0.2mm in diameter. They are present in many bones of most mammals and some bird, reptile, and amphibian species. Each osteon consist...
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http://en.wikipedia.org/wiki/Osteon
the chief structural unit of compact (cortical) bone, consisting of concentric bone layers called lamellae, which surround a long hollow passageway, ... [1 related articles]
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http://www.britannica.com/eb/a-z/o/36
A central canal containing blood capillaries and the concentric osseous lamellae around it occurring in compact bone. ... Synonym: haversian system. ... Origin: G. Osteon, bone ... (05 Mar 2000) ...
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http://www.encyclo.co.uk/local/20973
(os´te-on) the basic unit of structure of compact bone, comprising a haversian canal and its concentrically arranged lamellae.
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http://www.encyclo.co.uk/local/21001
Type: Term Pronunciation: os′tē-on, -ōn Definitions: 1. A central canal containing blood capillaries and the concentric osseous lamellae around it occurring in compact bone. Synonyms: haversian system
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http://www.medilexicon.com/medicaldictionary.php?t=63822
(os;te-on) A group of osteocytes and concentric lamellae surrounding a central canal, constituting the basic unit of structure in osseous tissue; also called a haversian system.
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http://www.mhhe.com/biosci/abio/glossary.mhtml
In thin plates of bone, a concentric series of layers of minerals surrounding the central canal.
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https://www.orthohealth.com/glossary/
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