Chemical Coordination and Integration
Hypersecretion of Growth Hormone in adults does not cause further increase in height, because
Growth Hormone becomes inactive in adults
Epiphyseal plates close after adolescence
Bones loose their sensitivity to Growth Hormone in adults
Muscle fibres do not grow in size after birth
B.
Epiphyseal plates close after adolescence
Epiphyseal plate is responsible for the growth of bone which close after adolescence so hypersecretion of growth hormone in adults does not cause further increase in height.
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