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Difference between revisions of "Bone"
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→Normal bone
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===Matrix=== | ===Matrix=== | ||
Two types: | Two types (based on arrangement of collagen): | ||
* | #Woven. | ||
*Lamellar. | #*Always abnormal in adults. | ||
#*Collagen arranged haphazardly - mechanically weak. | |||
#Lamellar. | |||
#*Collagen organized in layers (lamellae). | |||
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)]. | |||
===Cells=== | ===Cells=== | ||
*Osteoblasts | *Osteocytes. | ||
*Osteoclasts | **Sit in lacunae. | ||
***Empty lacunae = necrotic bone. | |||
*Osteoblasts. | |||
**Make bone. | |||
*Osteoclasts. | |||
**Destroy bone. | |||
**Multinucleated. | |||
Memory device: 'b' before 'c'. | Memory device: 'b' before 'c'. | ||