In the absence of testosterone, the genital tubercle forms the female phallus, called the clitoris. The clitoris is made up of the glans and the body of the internal organ. Unfortunately, the clitoris does not respond with a lover. Neither do women respond to erotic stimuli (experience mental arousal) with a lover as men do. Even for a responsive woman, orgasm is an occasional pleasure she enjoys alone by focusing on surreal fantasies.
A woman’s sex organ (clitoris) is separate from her internal reproductive anatomy (ovaries, uterus and vagina). The sole function of the clitoris is to be a sex organ. Unlike a man, a woman has separate anatomy for urination (the urethra), reproduction (the vagina) and orgasm (the clitoris). These three functions are all combined for a man and provided by the penis. A woman’s anatomy is more evolved (because each part of her anatomy has only one function) but a man’s anatomy is more practical and convenient.
The sex organ (penis or clitoris) is the only erectile organ of the body. When a person is aroused (their mind responds positively to eroticism), the brain causes an increase in the rate of blood-flow around the body. Our physical arousal, which involves blood flowing into the corpus cavernosa causes swelling to varying degrees, called tumescence, of the sex organ.
The clitoris is largely an internal organ. Only the glans (or bud) is visible externally. The glans is hidden by the labia majora as well as pubic hair. The glans is covered by a clitoral hood formed in part by the fusion of the upper part of the two labia minora. The clitoris has corpora cavernosa that are smaller but analogous to those of the penis. During arousal, these tissues trap blood. After orgasm, the blood is released back into the circulation.
The clitoris is the homologue of the penis but the two organs develop very differently. The body of the clitoris consists of two parallel corpora cavernosa of erectile tissue (that measure up to 5 inches in length), smooth muscle and connective tissue (collagen and elastin) surrounded by a fibrous sheath (tunica albuginea). The clitoris becomes tumescent (swollen) but does not become erect (rigid). The clitoris does not have the same mechanism that the penis has for causing an erection. This much lower level of arsousal explains why most women are unaware of it. Even for a responsive woman, arousal is predominantly subconscious. A responsive woman uses a conscious technique to tap into her arousal by focusing on surreal erotic fantasies and utilise her arousal in order to achieve orgasm.
As a consequence of never being rigid, the clitoris lacks the erotic sensitivity of the penis. Stimulation by a lover of the clitoral bud (even over the clitoral hood) causes a woman to feel indifference, discomfort or even pain. When a woman casually stimulates over her clitoral glans, she obtains little pleasure because she is not aroused. The clitoris is not an external phallus that can be used to penetrate and impregnate another person. Consequently, women do not have a sex drive to engage in intercourse. As neither the clitoris nor female orgasm are involved in reproduction, women are not aroused by the kind of real-world erotic stimuli that arouse men.
The stimulation used by a responsive woman (when masturbating alone), involves massaging the skin over the glans and pressing her fingers down into the internal organ (either side of the vaginal opening). This external manual massaging is combined with internal pressure on the clitoral organ, achieved by a rhythmic thrusting motion and clenching the buttock muscles. None of this stimulation is sensationally pleasurable in itself. Mental arousal (by focusing on conceptual fantasy) and physical arousal (tumescence) provide some mild pleasure. The key pleasure of female masturbation revolves around the sensations of releasing sexual emotions at the end.
Female orgasm is a hangover from how the sexes evolved. Female orgasm is a miracle for two reasons. Firstly we usually only evolve functionality for a specific (life-critical) purpose. Secondly we also lose characteristics that have no useful function. Male orgasm triggers ejaculation but female orgasm has no role in reproduction. The clitoris is the source of female orgasm, which provides a woman’s own personal pleasure. Since it is largely internal, the clitoris does not have the same significance for a woman as the penis has for a man. Unless a woman is responsive, she is unaware of the clitoris. This explains why most women have little interest in the clitoris or orgasm.
In younger women there is little discernible swelling of the clitoris. If a woman places her three middle fingers over her vulva, she can feel the top of the pelvic bone. If she runs her fingers gently down towards the perineum, she can feel a tingling sensation of the clitoral glans with her index finger. Her other two fingers pass down the sides of the labia. This area becomes slightly swollen when tumescent and is pleasurable to touch.
During periods of subconscious arousal, increased blood-flow (in older women) can cause the internal clitoral organ to swell. The swollen pubic area is very noticeable both to the eye and to touch (by pressing down either side of the labia majora). Clitoral tumescence is not a sign of mental arousal nor does it help with orgasm. The main benefit of clitoral tumescence is an increased sensitivity in the pelvic region during intercourse.
The clitoris, which is the phallus of the female, is the homologue of the penis of the male. (Alfred Kinsey 1953)