2017 Chemical Coordination and IntegrationGrowth hormone – disorders Easy Question 36 of 85 in Chemical Coordination and Integration

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

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

The answer is B.

Solution

Closed growth plates prevent further lengthening of bones.

The epiphyseal plate is responsible for growth of bone in length; it closes after adolescence, so hypersecretion of growth hormone in adults does not increase height.

Concept epiphyseal-plate-closure

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