His20051117 - Histology Lecture Dave Jian Ni and Mia Bone...

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Histology Lecture November 17, 2005 Dave, Jian Ni, and Mia
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Bone General classification: primary bone, woven (of fetal type) and secondary bone, lamellar (of adult type)-differences Anatomical classification and characteristic of adult bones Histological classification of adult bone: compact or cortical and trabecular or cancellous; structural units (lamella, osteon, trabecular packet) composition and characteristic of matrix Classification and function of bone cells: osteoprogenitor cells, osteoblasts, osteocytes, bone-lining cells and osteoclasts Histogenesis [intramembranous ossification, endochondral ossification, formation of cortical bone, growth plate or epiphyseal-metaphyseal complex]
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Bone Primary (plywood?) bone – primary, woven-like, no lamination Matured bone (Adult-type) – laminated, from primary to adult type bone, secondary Osteoid – mineralized mainly with calcium cells, collagen fibers type I, 90% of organic matrix, and ground substance
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Ground Substance Fibers and mineral crystal are embedded.
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