Bone Ossification. Endochondral ossification Intramembranous ossification.

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Presentation transcript:

Bone Ossification

Endochondral ossification

Intramembranous ossification

Endochondral ossification

RZ PZ MZ HZ CZ Endochondral ossification

Proliferation zone Maturation zone Hypertrophy zone and calcification

Ossification zone

Osteoblast

Osteoclast Bone marrow

Bone trabeculum osteocyte osteoblast

Resorption zone

Osteoclast in depression called howship lacunae

osteoclast osteocyte

Primary Ossification Center Periosteal bone collar Periosteum

Bone marrow cavity (resorption zone)

Intramembranous ossification Periosteal bone collar

Intramembranous ossification ( Spongy bone) Mesenchyme conn. tissue trabeculum

No Secondary ossification center Primary ossification center

Secondary ossification

Secondary ossification center Blood vessels

Primary ossification center Secondary ossification center Epiphyseal plate

Secondary Ossification center

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