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

  1. A
    Epiphyseal plates close after adolescence
  2. B
    Bones loose their sensitivity to Growth Hormone in adults
  3. C
    Muscle fibres do not grow in size after birth
  4. D
    Growth Hormone becomes inactive in adults

Solution & Step-by-step Explanation

Linear growth of long bones occurs at the epiphyseal plates (growth plates). After adolescence, these plates fuse/close, preventing further increase in height. Hypersecretion of GH in adults leads to Acromegaly (thickening of bones) rather than Gigantism.

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Hypersecretion of Growth Hormone in adults does not cause further increase in height, because:
A
Epiphyseal plates close after adolescence
B
Bones loose their sensitivity to Growth Hormone in adults
C
Muscle fibres do not grow in size after birth
D
Growth Hormone becomes inactive in adults

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Chemical Coordination and IntegrationHormonesGrowth Hormone

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