Alfred Kinsey's Sexual Behavior in the Human Male and Sexual Behavior in the Human Female sought to build "an objectively determined body of fact and sex," through the use of in-depth interviews, challenging currently held views about sex. The spirit of this work was taken forward by William H. Masters and Virginia Johnson in their work, Human Sexual Response - a real-time observational study of the physiological effects of various sexual acts. This orgsam led to the establishment of sexology as a scientific discipline and is still an important part of today's theories on orgasms.

Sex researchers have defined orgasms within staged models of orgsam response. Although the orgasm process can differ greatly between individuals, several basic physiological changes have been identified that tend to occur in the majority of incidences. The following models are patterns that have orgsam found to occur in all forms of sexual response and are not limited solely to penile-vaginal intercourse.

Orgasm - Wikipedia

orgsam Kaplan's model differs from most other sexual response models as it includes desire - most models tend to avoid including non-genital changes. It is also important to note that not all sexual activity is preceded by desire. A cohort study published in suggested that the risk of mortality was considerably lower in men with a high frequency of orgasm than men with a low frequency of orgasm.

This is counter to the view in many cultures worldwide that the pleasure of the orgasm is "secured at the cost of vigor and wellbeing. There is some evidence that frequent ejaculation might reduce the risk of prostate cancer. A team of researchers found that the risk for prostate cancer was 20 percent lower in men who ejaculated at least 21 times a month compared with men who ejaculated just 4 to 7 times a month. Several hormones that are orgsam during orgasm have been identified, such as oxytocin and DHEA; some studies suggest that these hormones could have protective qualities against cancers and heart disease.

Oxytocin and other endorphins released during male and female orgasm have also been found to work as relaxants. Unsurprisingly, given that experts are yet to come to a consensus regarding the definition of an orgasm, there are multiple different forms of categorization for orgasms. Orgsam psychoanalyst Sigmund Freud distinguished female orgasms as clitoral in the young and immature, and vaginal in those with a healthy sexual response. In contrast, the sex researcher Betty Dodson has defined at least nine different forms of orgasm, biased toward genital stimulation, based on her research.

Here is a selection of them:. There are other forms of orgasm free maggie gyllenhaal nude Freud and Dodson largely discount, but orgsam others have described them. For instance:.

The following description of the physiological process of female orgasm in the genitals will use the Masters orgsam Johnson four-phase model.

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When a woman is stimulated physically or psychologically, the blood vessels within her genitals dilate. Increased blood supply causes the vulva to swell, and fluid to pass through the vaginal walls, making the vulva swollen and wet. Internally, the top of the orgsam expands. Heart rate and breathing quicken and blood pressure increases.

Blood vessel dilation can lead to the woman appearing flushed, particularly on the neck and chest. As blood orgsam to the introitus - the lower area of the vagina - reaches its limit, it becomes firm.

Breasts can increase in size by as much as 25 percent and increased blood flow to the areola - the area surrounding the nipple - causes the nipples to appear less erect. The clitoris pulls back against the pubic bone, seemingly disappearing. The genital muscles, including the uterus and introitus, experience rhythmic contractions around 0. The female orgasm typically lasts longer than the male at an average of around seconds. Unlike men, most women do not have a refractory recovery period and so can have further orgasms if they are stimulated again.

The body gradually returns to its former state, with swelling orgsam and the slowing of pulse and prun hub gay. The following orgsam of the physiological process of male orgasm in the genitals uses the Masters and Johnson four-phase model. When a man is stimulated physically or psychologically, he gets an erection.

Blood flows into the corpora orgsam the spongy tissue running the length of the penis - causing the penis to grow in size and become rigid. The testicles are drawn up pictures of rihanna nude the body as the scrotum tightens. As the blood vessels in and around the penis orgsam with blood, the glans and testicles increase in size. In addition, thigh and buttock muscles tense, blood pressure rises, the pulse quickens, and the rate of breathing increases.

Semen - a mixture orgsam sperm 5 percent and fluid 95 percent - is forced into the urethra by a series of contractions in the pelvic floor muscles, prostate gland, seminal vesicles, orgsam the vas deferens. Contractions in the pelvic floor muscles and prostate gland also cause the semen to be forced out of the penis in a process called ejaculation. Exploding Orgasm On Her Face Young girlfriend real orgasm Emily Grey and her nice orgasm Full figured grandma with big tits needs orgasm Alexa Iliuta 18 Ani amatori studenta din iasi masturbeaza cu orgasm Fucking my Peruvian Milf to an Anal Orgasm Marysol83 squirting orgasm Tattoo Tentacle Orgasm Sexy tight teen babe uses hitachi to orgasm on cam Squirting sybian orgasm from Flower Tucci Wife hitachi orgasm on webcam Lesbian orgasm xxx Reallifecam Voyeur Kendra James forced orgasm Keiko reaches an orgasm Reaching orgasm in the lovely shower POV clitorial masturbation to orgasm black sec tube Perfect bbc cuckold Julia gets a loud moaning orgasm Sensual orgasmo Retrieved October 21, Lay summary — CBSnews.

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Orgasms: Facts, types, causes, and misconceptions

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In homosexual relations, most men do not reach orgasm in receptive anal intercourse, and a number report not reaching orgasm by any method in many of their sexual relationships, which they nevertheless enjoy. The Anatomy of Pleasure. Infinity Publishing. Retrieved July 5, Tristan Taormino Cleis Press.

Popular in: Sexual Health / STDs

Orgsam Gaby espino desnuda 11, Skyhorse Publishing Inc. Pillowbook: creating a sensual lifestyle. Kinsey, Wardell B. Pomeroy, Clyde E. Martin, Paul H. Gebhard Sexual Behavior in the Human Female. Indiana University Press. There are some females who appear to find no erotic satisfaction in having their breasts manipulated; perhaps half of them derive some distinct satisfaction, orgsam not more than a very small percentage ever respond intensely enough to reach orgasm as a result of such stimulation Chapter 5.

Smith Cultural Encyclopedia of the Breast.

Squriting White Wife orgasm and cry

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Orgsam Porn Videos |

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The lack of vaginal genatility was later shown by sex-economy to be an artifact of our culture, which suppresses genitality completely and instills castration anxiety not only in the boy but also in the girl.

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Human sexuality and sexology.


orgsam best tranny fuck The orgasm is widely regarded as the peak of sexual excitement. It is a powerful feeling of physical pleasure and sensation, which includes a discharge of accumulated erotic tension. Overall though, not a great deal is known about the orgasm, and over the past century, theories about the orgasm and its nature have orgsam dramatically. For instance, healthcare experts have only relatively orgsam come round to the idea of the female orgasm, with many doctors as recently as the s claiming that it was normal for women not to experience them. In this article, we will explain what an orgasm is in men and women, why it happens, and explain some common misconceptions. Orgasms can be defined in different ways using different criteria.
orgsam best ass ever xxx They are often associated with other involuntary actions, including muscular spasms in multiple areas of the body, a general euphoric sensation and, frequently, body movements and vocalizations. Human orgasms usually result from physical sexual stimulation of the penis orgsam males typically accompanying ejaculation and of the clitoris in females. The health effects surrounding the human orgasm are diverse. There are many physiological responses during sexual activity, including a orgsam state created by prolactin, as well as changes in the central nervous system such as a temporary decrease in the metabolic activity of large parts of the cerebral cortex while there is no change or increased metabolic activity in the limbic i. In a clinical context, orgasm is usually defined strictly by the muscular contractions involved during sexual activity, along with the characteristic patterns of change in heart rate, blood pressure, and often respiration rate and depth.
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