edochondral ossification

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Guy Sovak
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edochondral ossification

Here you can see a collage that I made from an edochondral ossification Histological slide
The arrow shows the direction of growth. the first row beginning from the right we see the synovial joint then the resting zone with small chondro blasts. The second zone, zone of proliferation is recognized by the chondroblast that are stacked in piles of four or more cells. Then comes the Hypertrophy zone recognized by large lacunae with chondroblasts in them. The last zone is the zone of calcification you can see the red bone trabecullae with osteocyte in them.