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12 Cards in this Set
- Front
- Back
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What is intramembranous ossification? |
Bone is laid down and replaced by fibrous connective tissue Occurs in the skull, mandible and maxilla |
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What is endochondrial ossification? |
Hyaline cartilage is gradually replaced by osteocytes and calcium hydroxyapatite. Occurs in the long bones, pelvis and vertabrae |
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What is the outline structure of the bone formed by? |
Cartilage |
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Where do primary ossification centres appear? |
In the diaphysis of bone |
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Where do primary ossification centres appear? |
In the diaphysis of bone |
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Where does secondary ossification appear? |
At the epiphysis (end of bone) |
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Where do primary and secondary ossification meet? |
At a thick band of cartilage (EPIPHYSEAL GROWTH PLATE) |
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What does the epiphyseal growth plate produce? |
New cartilage elongating the bone |
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What are cartilage cells converted to bone by? |
Osteoblasts |
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What are cartilage cells converted to bone by? |
Osteoblasts |
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What remodel the interior of the diaphysis and what do they create? |
Osteoclasts - create the medullary cavity |
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What happens at the last phase of endochondrial ossification? |
Cartilage cells stop diving and are ossified - GROWTH PLATE IS CLOSED |
