Hypersecretion of Growth Hormone in adults does not cause a further increase in height, because

Hypersecretion of Growth Hormone in adults does not cause a further increase in height, because
  1. Growth Hormone becomes inactive in adults
  2. Epiphyseal plates close after adolescence
  3. Bones loose their sensitivity to Growth Hormone in adults
  4. Muscle fibres do not grow in size after birth

Solution

Chronic hypersecretion of Growth Hormone (GH) leads to gigantism or acromegaly depending on the age of the individual. If its hypersecretion occurs before the ossification of epiphyseal plates, it causes exaggerated and prolonged growth in long bones. It results in gigantism. In adults, hypersecretion of GH leads to acromegaly. No increase in height occurs because of the ossified epiphyseal plate.

Asked in: NEET 2017

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