As we have seen, it is not only the uterus which takes
an active part in detumescence; the vagina also is in active movement, and
it seems highly probable that, at all events in some women and under some
circumstances, such movement favoring aspiration toward the womb may be
communicated to the external mouth of the vagina.
Riolan (_Anthropographia_, 1626, p. 294) referred to the
constriction and dilation of the vulva under the influence of
sexual excitement. It is said that in Abyssinia women can, when
adopting the straddling posture of coitus, by the movements of
their own vaginal muscles alone, grasp the male organ and cause
ejaculation, although the man remains passive. According to
Lorion the Annamites, adopting the normal posture of coitus,
introduce the penis when flaccid or only half erect, the
contraction of the vaginal walls completing the process; the
penis is very small in this people. It is recognized by
gynaecologists that the condition of vaginismus, in which there is
spasmodic contraction of the vagina, making intercourse painful
or impossible, is but a morbid exaggeration of the normal
contraction which occurs in sexual excitement.
Pages:
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337