The hormones that promote closure of the epiphyseal discs are:
A)insulin and thyroxine
B)thyroxine and GH
C)GH and insulin
D)estrogen and testosterone

Question

Quizplus · Accepted Answer

The hormones estrogen and testosterone promote closure of the epiphyseal discs. This is why the growth plates close earlier in females (who have higher levels of estrogen) than in males (who have higher levels of testosterone). Insulin and thyroxine are not directly involved in closure of the epiphyseal discs. Although GH does play a role in bone growth, it does not directly promote closure of the growth plates. Thyroxine may indirectly affect closure of the growth plates by promoting the overall development and maturation of the body.

The Hormones That Promote Closure of the Epiphyseal Discs Are