at onset of puberty , the hypothalamus resumes a marked pulsatile secretion of gonadotropin-releasing hormone , leading to an increased secretion of pituitary gonadotropins which in turn stimulate the gonadal functions , i.e . the secretion of testosterone or estradiol and maturation of the spermatogenesis or the ovarian follicle .
C0018067
gonadal
C0037864
spermatogenesis