Anatomical Evidence

Rather than starting with what women ought to feel, it would seem logical to start out with the anatomical facts regarding the clitoris and vagina.

The Clitoris is a small equivalent of the penis, except for the fact that the urethra does not go through it as in the man's penis. Its erection is similar to the male erection, and the head of the clitoris has the same type of structure and function as the head of the penis.

The head of the clitoris is also composed of erectile tissue, and it possesses a very sensitive epithelium or surface covering, supplied with special nerve endings called genital corpuscles, which are peculiarly adapted for sensory stimulation that under proper mental conditions terminates in the sexual orgasm. No other part of the female generative tract has such corpuscles.

The clitoris has no other function than that of sexual pleasure.

The Vagina - Its functions are related to, the reproductive function. Principally, 1) menstruation, 2) receive penis, 3) hold semen, and 4) birth passage. The interior of the vagina, which according to the defenders of the vaginally caused orgasm is the center and producer of the orgasm, is:

Like nearly all other internal body structures, poorly supplied with end organs of touch. The internal entodermal origin of the lining of the vagina makes it similar in this respect to the rectum and other parts of the digestive tract.

The degree of insensitivity inside the vagina is so high that "Among the women who were tested in our gynecologic sample, less than 14% were at all conscious that they had been touched."

Even the importance of the vagina as an erotic center (as opposed to an orgasmic center) has been found to be minor.

Other Areas - Labia minora and the vestibule of the vagina. These two sensitive areas may trigger off a clitoral orgasm. Because they can be effectively stimulated during "normal" coitus, though infrequently, this kind of stimulation is incorrectly thought to be vaginal orgasm. However, it is important to distinguish between areas which can stimulate the clitoris, incapable of producing the orgasm themselves, and the clitoris:

Regardless of what means of excitation is used to bring the individual to the state of sexual climax, the sensation is perceived by the genital corpuscles and is localized where they are situated: in the head of the clitoris or penis.

Psychologically Stimulated Orgasm - Aside from the above mentioned direct and indirect stimulation of the clitoris, there is a third way an orgasm may be triggered. This is through mental (cortical) stimulation, where the imagination stimulates the brain, which in turn stimulates the genital corpuscles of the glans to set off an orgasm.