Understanding Skeletal Growth: Growth Centers And Growth Sites

Write short answer on growth site and growth centre.
Answer.

Growth Site

These are the areas which occur in bone where the marked or significant growth of that particular bone occurs.
Growth sites show the marked response to the external inflences.
Growth site is an area of skeletal growth which occurs secondarily and grows in compensatory fashion to growth and function in separate but the nearby location.
Growth sites do not consists of tissue separating capabilities but rather respond more readily to factors extrinsic to their specifi area.
A good example is periosteal bone growth which is associated with muscle function.
Growth sites can occur at growth centers but all growth sites are not growth centers.

Growth Center

It is an area of bone which controls overall growth of the bone.
As per Baume they are the areas of primary cartilaginous bone growth which act as skeletal growth centers.
Usually growth centers are more intrinsically regulated and are less dependent on the epigenetic factors. This means that they are more genetically controlled with litte or no environmental inflence on them.
Growth centers have tissue – separating capabilities or capacity to grow and expand despite the presence of epigenetic mechanical forces which seem to be capable of inhibiting or stopping skeletal growth.
A good example is cranial base synchondroses.

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