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  • Bone formation and growth. Cartilage producing cells called chondroblasts build the

  • initial template for bone formation in the embryonic stage

  • Hyaline cartilage is used as the model upon which osteoblasts

  • build bone matrix in a process called ossification

  • As th

  • fetus grows the cartilage is digested forming a bone enclosed cavity called the

  • medulla or

  • medullary cavity. At birth

  • only the epiphyseal plate and articular cartilage

  • have not been converted to bone new cartilage is formed continuously at both

  • of these locations, making the bone longer

  • Increase in bone width is appositional growth. To widen the bone,

  • osteoblasts in the periosteum add bone tissue to the outside the bone shaft

  • at the same time

  • osteoclasts remove bone from the medulla

  • maintaining the thickness of the bone

  • Once an osteoblast has grown bone around itself and becomes trapped in

  • bone matrix

  • inside a lacuna, it differentiates into a mature osteocyte

Bone formation and growth. Cartilage producing cells called chondroblasts build the

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B1 US bone cartilage medulla formation cavity growth

Bone Formation Growth

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    李佳憶 posted on 2016/03/15
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