Difference between revisions of "Bone"

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58 bytes added ,  16:15, 21 November 2012
(→‎Bone Matrix: subdivide)
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*[http://commons.wikimedia.org/wiki/File:EpiMetaDiaphyse.jpg Bone (WC)].
*[http://commons.wikimedia.org/wiki/File:EpiMetaDiaphyse.jpg Bone (WC)].


==Bone Matrix==
==Bone histology==
Two types (based on arrangement of collagen):
Two types (based on arrangement of collagen):
#Woven.
# Woven bone.
#*Always abnormal in adults.
# Lamellar bone.
#*Collagen arranged haphazardly - mechanically weak.  
#Lamellar.
#*Collagen organized in layers (lamellae).


Woven vs. lamellar:
===Woven bone===
*Easiest way to differentiate: polarize; lamellar bone has well-defined layers.
*Always abnormal in adults.
*Collagen arranged haphazardly - mechanically weak.  


Images:
Images:
*[http://www.ajnr.org/cgi/content-nw/full/27/2/274/F4 Woven bone (ajnr.org)].<ref name=pmid16484391>{{cite journal |author=Lin DD, Gailloud P, McCarthy EF, Comi AM |title=Oromaxillofacial osseous abnormality in Sturge-Weber syndrome: case report and review of the literature |journal=AJNR Am J Neuroradiol |volume=27 |issue=2 |pages=274–7 |year=2006 |month=February |pmid=16484391 |doi= |url=}}</ref>
*[http://www.ajnr.org/cgi/content-nw/full/27/2/274/F4 Woven bone (ajnr.org)].<ref name=pmid16484391>{{cite journal |author=Lin DD, Gailloud P, McCarthy EF, Comi AM |title=Oromaxillofacial osseous abnormality in Sturge-Weber syndrome: case report and review of the literature |journal=AJNR Am J Neuroradiol |volume=27 |issue=2 |pages=274–7 |year=2006 |month=February |pmid=16484391 |doi= |url=}}</ref>
*[http://www.brown.edu/Courses/Digital_Path/systemic_path/bone/paget.html Woven bone (brown.edu)].
*[http://www.brown.edu/Courses/Digital_Path/systemic_path/bone/paget.html Woven bone (brown.edu)].
===Lamellar bone===
*Collagen organized in layers (lamellae).
===Woven versus lamellar===
*Easiest way to differentiate: polarize; lamellar bone has well-defined layers.


==Bone cells==
==Bone cells==
48,830

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