Which event is the earliest to occur in puberty?
A) The hypothalamus releases increased levels of GnRH.
B) The level of circulating androgens rises in males.
C) The menstrual cycle is initiated in females.
D) The gonads differentiate into testes or ovaries.
E) The hypothalamic GnRH-producing cells become more sensitive to negative feedback from sex steroids and gonadotropins.

Question

Quizplus · Accepted Answer

The earliest event in puberty is the increased release of GnRH (gonadotropin-releasing hormone) by the hypothalamus, which triggers the onset of puberty by stimulating the pituitary gland to release gonadotropins.

Which Event Is the Earliest to Occur in Puberty