Scientific work Orgasm in women rather a coincidence product?

Study looks for the causes of the female climax
For years, doctors and scientists have been wondering exactly how the female orgasm works or why it even exists. After all, the female climax does not play a decisive role in reproduction and is therefore functionally rather redundant. Researchers have now discovered that the female climax is a distant idea of ​​evolution, which is still connected to our ancestor, the monkey.

Unlike many mammals, female orgasm in humans is not really necessary for reproduction. For this reason, it is unclear why this effect exists in humans at all. Scientists from the internationally acclaimed Yale Biology Institute have announced in a press release that the female climax seems just a happy sequel to our evolutionary past. In this, the female orgasm was also used to stimulate ovulation. To this end, experts from Yale Yale University in New Haven and the Cincinnati Children's Hospital come in a joint investigation. The experts published the results of their study in the journal "JEZ-Molecular and Developmental Evolution"

For many men it is not clear how women get an orgasm. However, there is also the question of researchers and doctors, why the female climax exists at all. After all, he is not needed for our reproduction. (Image: Igor Mojzes / fotolia.com)

Female climax only the result of an ancient function?
Earlier studies had focused more on clues from human biology, rather than the evolutionary origin of the female climax, says author Professor Gunter Wagner of Yale's Systems Biology Institute. The scientists now assume that female orgasm is the result of an ancient function involved in the induction of ovulation. By the female climax hormones could have been released at that time, which played an important role in the reproduction, speculate the experts.

For many mammals, the peak is important for ovulation
Since there is no obvious link between the peak and the number of offspring or the successful reproduction in humans, the scientists focused on a particular physiological feature. This was the neuroendocrine discharge of prolactin and oxytocin, the physicians explain in their study. For this, the experts investigated the same activity in the placenta of other mammals. The experts found that in many mammals this reflex plays an important role in ovulation.

Males often induce ovulation in mammals
Despite the tremendous diversity of mammalian reproductive biology, some core traits can be traced throughout the evolution of mammals, the researchers explain. For example, the female ovarian cycle in humans is not dependent on sexual activity. In other mammals, however, ovulation is often induced by the male, say the experts. In these animals, hormones are released, which then cause ovulation.

Male-induced ovulation was probably the first to evolve, and later the derived property of cyclic or spontaneous entry was later developed, explain the physicians. The researchers suggest that male-induced ovulation developed about 75 million years ago. He originated in rodents and primates. Later, with the development of the so-called ovarian cycle in primates, he became superfluous for reproduction, explains Professor Wagner.

What is the role of the human female climax in this day and age??
Scientists suggest that female orgasm has been developed as an adaptation to a direct reproductive role. This reflex to induce ovulation then became superfluous later in evolution. For this reason, the female climax only plays a secondary role in the reproduction, say the doctors. For men, the situation looks quite different again. You need the orgasm with subsequent ejaculation in order to reproduce. Only then is it possible for the semen to enter the uterus of the woman.

So it remains unclear what role the female orgasm plays today, say the scientists. However, it should be noted that the process at that time was completely different than it does today's female orgasm, explains the researcher Mihaela Pavlicev. Perhaps the female climax has now taken on a completely different function, having become superfluous in reproduction, adds Pavlicev.

In the course of evolution, the position of the human clitoris has changed dramatically
A comparative study of female genitalia also showed that with the development of spontaneous ovulation, the clitoris also changed their position, explain the physicians. This anatomical change made it less likely for the clitoris to receive adequate stimulation during intercourse in humans to trigger the neuroendocrine reflex (orgasm). When mammals need an orgasm for their reproduction, the sexual organ is nearby or even in the female sexual channel, the experts explain.

This arrangement can be explained by the fact that such animals are dependent on the best possible stimulation during the act. In humans or generally in mammals with an ovarian cycle, the clitoris is usually a little further away. This is also the reason why some women can not experience orgasm through pure sexual intercourse, explains Pavlicev.

Penis and clitoris are made of the same tissue
There are many researchers who hypothesize that the female climax is, so to speak, a random consequence of male orgasm. When embryos develop, organs from the same tissues are formed in early stages in boys and girls, explain the physicians. Therefore, the male penis and the female clitoris are equipped with similar neural structures.

Possible physiological meaning of the female climax
But there is also the view among scientists and physicians that female orgasm has a logical physiological meaning. During the female climax, the vagina and uterus contract. In addition, the cervix begins to lower. All of these processes could increase the likelihood of fertilization. (As)