Ginecologia e obstetricia online dating
This increase in moisture provides vaginal lubrication, which reduces friction.
The texture of the vaginal walls creates friction for the penis during sexual intercourse and stimulates it toward ejaculation, enabling fertilization.
For these reasons, virginity cannot be definitively determined by examining the hymen.
The length of the vagina varies between women of child-bearing age.
In amphibians, birds, reptiles and monotremes, the cloaca is the single external opening for the gastrointestinal tract, the urinary, and reproductive tracts.
Female mammals usually have two external openings in the vulva, the urethral opening for the urinary tract and the vaginal opening for the genital tract.The lateral walls, especially their middle area, are relatively more rigid.Because of this, the collapsed vagina has an H-shaped cross section.It may be that the incorrect use of the term vagina is due to not as much thought going into the anatomy of the female genitals, and that this has contributed to an absence of correct vocabulary for the external female genitalia among both the general public and health professionals.Because of this and because a better understanding of female genitalia can help combat sexual and psychological harm with regard to female development, researchers endorse correct terminology for the vulva.