Female orgasm
From The Art and Popular Culture Encyclopedia
In Woman as Sex Object (1972), Marcia Allentuck argues that The Nightmare's intent is to show female orgasm.
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A typical woman's orgasm lasts much longer than that of a man. It is preceded by erection of the clitoris and moistening of the opening of the vagina. Some women exhibit a sex flush, a reddening of the skin over much of the body due to increased blood flow to the skin. As a woman nears orgasm, the clitoral glans moves inward under the clitoral hood, and the labia minora (inner lips) become darker. As orgasm becomes imminent, the outer third of the vagina tightens and narrows, while overall the vagina lengthens and dilates and also becomes congested from engorged soft tissue. Elsewhere in the body, myofibroblasts of the nipple-areolar complex contract, causing erection of the nipples and contraction of the areolar diameter, reaching their maximum at the start of orgasm. The uterus then experiences a series of between 3 and 15 muscular contractions. A woman experiences full orgasm when her uterus, vagina, anus, and pelvic muscles undergo a series of rhythmic contractions. Most women find these contractions very pleasurable.
Recently, researchers from the University Medical Center of Groningen, the Netherlands, correlated the sensation of orgasm with muscular contractions occurring at a frequency of 8–13 Hz centered in the pelvis and measured in the anus. They argue that the presence of this particular frequency of contractions can distinguish between voluntary contraction of these muscles and spontaneous involuntary contractions, and appears to more accurately correlate with orgasm as opposed to other metrics like heart rate that only measure excitation. They claim to have identified "[t]he first objective and quantitative measure that has a strong correspondence with the subjective experience that orgasm ultimately is". They note that the measure of contractions that occur at a frequency of 8–13 Hz is specific to orgasm. They found that using this metric they could distinguish from rest, voluntary muscular contractions, and even unsuccessful orgasm attempts.
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Female ejaculation
Discussions of female orgasm are complicated by the fact that, perhaps artificially, orgasm in women has sometimes been labelled as two different things: the clitoral orgasm and the vaginal orgasm.
A recent theory receiving some publicity is that the female body can achieve orgasm both from stimulation of the clitoris and from stimulation of the G-spot. The Gräfenberg spot, or G-spot, is a small area behind the female pubic bone surrounding the urethra and accessible through the anterior wall of the vagina. The G-spot orgasm is sometimes referred to as "vaginal," because it results from stimulation inside the vagina, including during sexual intercourse. The size of this spot appears to vary very considerably from person to person.
Multiple orgasms
For some women, the most sensitive area in the body is the G-spot, while for others, it is the clitoris. If properly stimulated, the G-spot may cause very strong orgasms, some stronger than the ones reached after clitoral stimulation.
Women are able to experience multiple orgasms which can be serial multiple meaning they are experiencing several orgasms immediately one after another or sequential multiple orgasms, which are the orgasms that occur one after another but separated by few minutes. Even though multiple orgasms are very rarely experienced, they are not impossible. They are, in fact, the ultimate climax women can achieve.
Women are able to achieve multiple orgasms due to the fact that they do not require any kind of refractory period as men do after the first orgasm. Theoretically, if stimulation is not interrupted, most women should be able to achieve multiple orgasms. Achieving multiple orgasms is not as easy as it looks given that generally women reach orgasms with greater difficulty than men. The variety of erogenous zones that a woman has on her body and that can be stimulated are an advantage that women have and men do not.
During sexual intercourse, it is usual that men stop the stimulation process in a woman, and this may be one of the reasons why many women do not actually achieve more than one orgasm. However, some women do not want to be pressured into another orgasm while others are eager for more. Sometimes, female multiple orgasms are accompanied by female ejaculation which does not happen in men. There is one important difference between male and female multiple orgasms which is also the reason why men cannot ejaculate when they experience a multiple orgasm. Although the biological function of a woman's orgasm is not completely understood as it does not serve an essential purpose to human survival some theories suggest that muscular contractions associated with orgasms pull sperm from the vagina to the cervix, where it's in a better position to reach the egg.
Two-orgasm theory
The "two-orgasm theory" (the belief that in human females there is a vaginal orgasm and a clitoral orgasm), has been criticized by feminists such as Anne Koedt (The Myth of the Vaginal Orgasm).
See also
