Physiologically, any person goes through these phases of the sexual response cycle that built: sexual desire, sexual arousal, and as a consequence orgasm, and resolution phase.
For the regulation of functions of sexual sphere of man by nature was created by bodies such as the cerebral cortex as subcortical structures, and some centers of the spinal cord. All sex centers that regulate sexual function, are closely linked, and of course are in clear interaction, just obey, and form a single whole system.
Sex drive or libido depends on a biologically correct activity of glands of internal secretion, it the testes in men and the ovaries in women, the adrenal glands in both sexes and is caused by the metabolism. And of course, sexual desire, arousal and orgasm cannot be achieved without participation, and the normal functioning of the brain.
In an adult healthy person the degree of excitability of the sexual centers, as well as the strength of sexual desire taken to determine the level of hormones.
There is absolute dependence of sexual desire from the anthropological differences, for example, brunettes, and blacks have a stronger sex drive than blondes. Another example in humans is not a high-growth sexual drive may be stronger than in high. Women asthenic physique, to achieve orgasm will require a greater amount foreplay or other effort than normal. People from the southern countries with warmer climates libido brighter and stronger. The temperament of southerners really are more actively developed than that of northerners.
Of course, the sexual excitability of men and women are fundamentally different. Often sexual arousal in women is lower than men's. Male desire usually appears before a direct contact, in the course of sexual intercourse arousal growing very fast, and erection occurs very quickly, and after the resolution of sexual excitement and, of course, the erection disappears completely.
In addition to various hormones and erotic foreplay, stimulate sexual function can and some of the key stimuli.
This kind of sexual stimuli is purely individual for each person and personally due to its presentation of sex, his sexual experiences and his sexual ideals.
Affect sexual arousal is capable of music in the first place, exerting a stimulating effect on the deep structure of the brain and she is able to awake memories of erotic Association and other sexual experiences
Women are able to respond to the psycho-emotional impact of any pathogens is somewhat weaker than men.
Often women have the expectation of sexual contact does not cause sexual arousal, but the bulk of men in anticipation of sexual contact is a pronounced sexual arousal.
It is important to remember that the nature of male and female sexuality differ considerably.
Among other things, sexual arousal can be caused not only by the influence of certain hormones and pathogens, but also under the influence of purely mechanical stimuli, and that different kinds of stimulation and stimulants, sexual affection, and touch to specific areas that are particularly sensitive to touch.
Renowned American sexologists masters and V. V. Johnson in the implementation of sexual arousal secrete some phase of excitation, namely the plateau phase, the phase of orgasm and the phase of the so-called reverse development.
In the first phase, the phase of sexual arousal in normal men after a short time, usually up to thirty seconds, from the beginning of sexual stimulation, increasing blood flow to the organs of the pelvis, and the difficulty of outflow of blood owing to some compression of the veins. That leads to a sharp increase the penis in size, the increase is typically two to three times the penis becomes hardness, and significantly lengthened to seven or eight inches in length. Once there was an erection, the male immediately begins to seek liberation from sexual tension, to a certain discharge.
If the friction of the nerve endings of the penis on the vaginal walls during intercourse, the density of the contact is sufficient, the erection will constantly grow, and sexual excitement will increase. Men will become more frequent breathing and strengthen the heartbeat may become red in the face.
If you abruptly stop the contact, then sexual arousal may quite rapidly and sometimes quite slowly weakened veins expand, the blood flow will increase. That in turn will lead to reduction in penis size, and his fall. If the contact is to restore, and an erection is able to quickly recover.
After all for anybody not a secret that women need a much longer time to prepare for intercourse, and affect her erogenous zones need much longer that will be able to cause a sufficient degree of sexual excitement, and to be able to admit the singing in the vagina.
Of course, some women are more emotional, they have a very high secretory activity of the ovaries, these women are unable to achieve discharge even faster than some men.
However, the average woman with an average temperament, much harder to initiate sexual intercourse than a man, and in the absence of sufficient foreplay sex organs in women may not be prepared for sexual intercourse, the vaginal walls are almost closed, enough tight to each other, lubrication is still missing, the elasticity is not yet developed. Sexual arousal women can appear and grow only in the preliminary, sometimes quite long-lasting impact on her erogenous zones.
Phase of sexual arousal of women is very similar to the excitement phase in men. Also increases blood flow to the pelvic organs. The labia will increase in size and also in two or three times, they, changing color from pale pink they can become almost bright red. The clitoris will also swell, also called on women's sexual feelings, it is able to increase one and a half, sometimes twice as the penis, the clitoris will become compacted. As well loose becomes sexually excited, the vagina, the blood vessels of the vagina fills with blood, it becomes hot, the muscles begin to involuntarily shrink shrink several vagina, which in turn will contribute to a more intimate contact and friction with the male penis during intercourse.
In addition to the above, during strong sexual arousal sex organs women gain enough moisture, the vagina secretes lubricant so necessary, which is able to facilitate sliding of the penis into the vagina.
But when a calm state women the vaginal walls so tightly attached to each other, it remains only a small gap. In a state of sexual arousal the vagina will lengthen and expand, the cervix will hang up and back. The diameter of the vagina also increase in the vagina will appear for a free spot that will accommodate semen.
When there is an increase of excitement, and this feeling reaches the desired elevation, and then kept in this state for some period of time, know - this is the plateau-phase. This is the phase in which the vagina adapts to the shapes and sizes of the penis. Partners clearly feel the body each other. Woman's vagina, or rather its third part, is able to decrease by half, if you compare its dimensions with the dimensions in the previous phase, and takes the appearance of a narrow tube. Muscles of the female vagina, with sufficient sexual arousal tightly cover the penis. Thus, there is a powerful stimulation of bodies, or rather their nerve endings for both partners.
This is the phase when the female breast increases, there is a seal or erection of nipples, they can even be lengthened by one centimeter and increase in diameter to half an inch.
Sexologists W. masters and V. Johnson described orgasm in women thus. The orgasm is approaching, when the outer third of the vagina begins rhythmic contractions. Such rhythmic contractions affect the muscles of the uterus. The vagina is able to contract at intervals of eight-tenths of a second. Depending on the number and frequency of rhythmic contractions of the orgasm will either be magical, or peaceful. Typically, if you exercise three to five contractions orgasm is considered to be weak in the presence of six to eight contractions orgasm is the average intensity, from nine to twelve contractions, very strong orgasm. But these calculations are also very subjective, as there are women experiencing orgasm extraordinary strength and intensity in only three of five cuts.
At the onset of orgasm in men becomes more frequent the number of respiratory movements, pulse quickens. Reaching one hundred and eighty beats per minute, increasing blood pressure it can rise to twenty, and sometimes more points. For example, the male orgasm can increase the normal pressure at a hundred and twenty millimeters of mercury, to two hundred. At the moment of reaching orgasm may be flushing of the face and even Breasts.
Especially changes in intensity can be female orgasm. It can be similar to the male, with a short character of course, but on the contrary may be long and deep, which gives indescribable pleasure.
The female orgasm can be more than lingering, it can last twenty to sixty seconds, sometimes even longer. A prolonged form of orgasm may have a wavy character of the flow, it increases, then decreases, and continues an unknown number of tens of seconds, sometimes it can be even an hour and a half.
Found a number of women can experience multiple orgasms often repeated, which may follow one another at intervals of just one minute or two. These women are capable of experiencing three, and even four orgasms during one sexual contact.
There are cases when a woman can feel satisfied only when she will experience multiple, continuously following one after another of orgasms, from ten to twenty times. Most such repetitive orgasms happen with the active stimulation of the clitoris.
If a man is confident in the abilities of his partner, to experience multiple orgasms in a row, he will need to restrain myself not to ejaculate, as this can lead to the fact that his partner may remain unsatisfied with only one orgasm.
Therefore, for women with prolonged type of course orgasm, or needs multiple orgasms partner, in cases when it is not restrained, as the option should assist the partner, further stimulating the clitoris.
When you orgasm in a woman's body as something like that happens ejaculation. At this time some opens the cervix, and from it erupts something like the plug of viscous mucus, women's seed, or secret uterine glands. Women's seed as if gently stroking multiple nerve endings, and it all adds spice to the sensation. After that, the plug of mucus rises back into the uterus, and the cervix closes tightly. After ejaculation, as men and women disappear intense sensations of the genital organs, the outflow of blood, all over.
Even if a woman think that she feels like something squeezed from its body, the view that female ejaculation exists, is subjective and not proven.
Leading sexologists argue about it for years, but these discussions have only theoretical value. But in practice, a woman gets an orgasm absolutely no idea. As this process is called ejaculation, orgasm, or something else. The important thing is that she likes it very much.
The women decided to allocate five stages of the copulatory cycle arranged in series:
Among other things during sexual intercourse are distinguishable missio, or the introduction of the penis into the vagina, stage translational movements or frictions, and the stage of ejaculation and orgasm.
Many women consider sexual intercourse as the culmination of an emotionally demanding interpersonal relationship with a partner, they used to consider sex not only as physical proximity, but also as a spiritual rapprochement with a loved one.