Question

Which one of the following is not correct regarding the onset of puberty?

A. Onset of puberty is triggered by the maturation of the hypothalamic-pituitary-adrenal-gonadal axis
B. Primary sex characteristics are those directly involved in coitus and reproduction
C. The average age of onset of puberty is 11 years for boys and 13 years for girls
D. Increases in height and weight occur earlier in girls than in boys
E. In adolescent boys testosterone levels correlate with libido

Answer 1

The incorrect statement regarding the onset of puberty is that the average age of onset is 11 years for boys and 13 years for girls, as girls typically begin puberty earlier, between ages 9 and 10.

Step-by-step explanation:

The answer regarding the onset of puberty that is not correct is: C. The average age of onset of puberty is 11 years for boys and 13 years for girls. In fact, girls typically begin puberty between ages 9 and 10, and boys begin between ages 11 and 12. Puberty is characterized by the maturation of the hypothalamic-pituitary-adrenal-gonadal axis and the development of primary and secondary sex characteristics. Increases in height and weight do occur earlier in girls than boys, and in adolescent boys, testosterone levels do correlate with libido.