In mammals, the vagina is a muscular and tubular part of the female genital tract, which, in humans, extends from the vulva to the cervix. The outer vaginal opening may be partly covered by a membrane called the hymen. At the deep end, the cervix (neck of the uterus) bulges into the vagina. The vagina allows for sexual intercourse and childbirth, and channels menstrual flow, which occurs periodica الکترونیک و برق و ......
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برچسب : نویسنده : 3electroworldf بازدید : 171 تاريخ : چهارشنبه 19 مهر 1396 ساعت: 7:49