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Unformatted text preview: Ÿ Medullary cavity: yellow marrow Ÿ Hemopoiesis: 2.5million RBC’s every second Ÿ Irregular (everything else) Ÿ Bone is composed of several different bone cells in a matrix of ground substance, salts (calcium & phosphorus), and collagen fibers. Ÿ Composite material: flexibility and strength Ÿ Bone cells: Ÿ Estrogenic: immature bone cell in eriostemon and endosperm, responds to injury (osteoblasts and osteoclasts) Ÿ Osteoblasts: form bone and will become osteocytes Ÿ Osteocytes: mature bone cells. Ÿ Osteoclasts: reabsorbed of bone tissue Ÿ Bone-lining: thought to cover bone and regulate mineral movement in and out of bone Ÿ Trabeculae: shock absorbing, “tiles” Ÿ Parts of bone Ÿ Osteon (haversian system) (column) Ÿ Lamellae (concentric rings) Ÿ Osteocyte Ÿ Lacuna Ÿ Canaliculus Ÿ Central (haversian) canal Ÿ Perforating (Volkmann’s) canal Figure 1.11 Figure 1.12 Figure 4.1 Figure 5.3 Figure 6.3 Figure 6.6...
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- Spring '07
- Bone marrow, yellow bone marrow, bone cells, mature bone cells