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Unformatted text preview: 4. osteoblasts surrounded --> osteocytes 5. trabeculae - result when hardened bone forms 6. spongy bone now in place with red marrow 7. in time, spongy bone reconstructed -> compact bone C. Endochondral Ossification (replacing hyaline cartilage) 1. cartilage "bone model" formed in the embryo 2. perichondrium - membrane around the cartilage 3. vessel penetrates cartilage, brings osteoblasts 4. cartilage converted into compact bone 5. perichondrium --> periosteum 6. chondrocytes gradually hypertrophy and die 7. vessels move into space and convert to bone 8. primary ossification center - in diaphysis 9. secondary ossification center - in epiphysis 10. epiphyseal plate - between the two, still cartilage...
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