bone tissue 08 - To do list for today functions of the...

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To do list for today • functions of the skeleton •bone shapes • general features of bone–parts •bone histology = cells + matrix •structura l disorders of bone
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long short flat irregular
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Fig. 6.2a(TE Art) Epiphysis Epiphysis Diaphysis Spongy bone Epiphyseal line Compact bone Medullary cavity Endosteum Articular cartilage Periosteum Articular cartilage osteo = bone peri = around endo = within artic = joint
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Compact bone Spongy Bone (diploe) Suture Flat bones
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Bone tissue = bone cells = matrix
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periosteum endosteum osteon Central canal trabeculae Perforating canal Perforating fibers Compact bone Spongy bone Bone marrow
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Osteoprogenitor ** osteocyte ** ** Osteoblast ** Bone cells canaliculi
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Stem cells osteoclast Bone dissolving macrophages ** Osteoclast ** Why dissolve bone?? Paget’s disease (osteitis deformans) = increased osteoclast activity
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Bone matrix •1/3 organic = flexibility • collagen •protein carbo complexes •2/3 inorganic = strength
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bone tissue 08 - To do list for today functions of the...

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