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G-spot
The G-spot, also called the Gräfenberg spot (for German gynecologist Ernst Gräfenberg), is characterized as an erogenous area of the vagina that, when stimulated, may lead to strong sexual arousal, powerful orgasms and potential female ejaculation.〔See (page 135 ) for prostate information, and (page 76 ) for G-spot and vaginal nerve ending information. 〕 It is typically reported to be located up the front (anterior) vaginal wall between the vaginal opening and the urethra and is a sensitive area that may be part of the female prostate.
The existence of the G-spot has not been proven; nor has the source of female ejaculation. Although the G-spot has been studied since the 1940s,〔 disagreement persists over its existence as a distinct structure, definition and location.〔 A 2009 British study concluded that its existence is unproven and subjective, based on questionnaires and personal experience.〔See (page 98 ) for the 2009 King's College London's findings on the G-spot and (page 145 ) for ultrasound/physiological material with regard to the G-spot. 〕 Other studies, using ultrasound, have found physiological evidence of the G-spot in women who report having orgasms during vaginal intercourse.〔 It is also hypothesized that the G-spot is an extension of the clitoris and that this is the cause of orgasms experienced vaginally.〔
Sexologists and other researchers are concerned that women may consider themselves to be dysfunctional if they do not experience G-spot stimulation, and emphasize that this is not abnormal.〔
==Theorized structure==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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