Maturity. Opinions about when men and women reached sexual maturity were closely related with attitudes toward sexuality in general, which were also a mixture of medical and religious beliefs. In medical terms, male sexuality was the baseline for any perception of human sexuality, and the female sex organs were viewed as the male turned inside out or simply not pushed out. The great sixteenth- century anatomist Andreas Vesalius depicted the uterus looking exactly like an inverted penis, and his student Baldasar Heseler commented: "The organs of procreation are the same in the male and the female. . . . For if you turn the scrotum, the testicles and the penis inside out you will have all the genital organs of the female." This idea meant that there were no specific names for many female anatomical parts until the eighteenth century, because they...