Fellowship in Sexology and Psychosexual Counseling. For More Info WhatsApp- 9604715783/9359863878. Testosterone secretion, after puberty, causes the penis, scrotum and testis to enlarge until age of 20. Testosterone causes secondary sex characteristics of the males. In female, the anterior pituitary produces gonadotropic hormones, FSH and LH which act on ovaries and produce estrogen and progesterone. During the reproductive years there is monthly rhythmic change in the rate of secretion of female hormones and corresponding changes in the ovaries and sexual organs. The rhythmic pattern, called as menstrual cycle, is of 28 days. Variation from 20 days in taken as normal.