Anteriorly the vaginal vestibule is a triangular area where the external orifice of the urethra opens. At the sides of it the small orifices of the paraurethral ducts open.

The female prostate is a glandular anatomical structure present in every woman. De Graaf first described it in 1672. The secretion of these glands, in which PSA is also present, would be expelled during female orgasm into the vaginal vestibule through the urethral meatus or through the orifices of the paraurethral ducts (female emission: in male it corresponds to the phase of “emission”). Many women are not aware of that because the emission happens without squirting: it is not ejaculated.

The seminal collicle is a prominence of the dorsal surface of the prostatic urethra where the ejaculatory ducts and the male vagina (prostatic utricle) open.

Male vagina, as female vagina, develops from the sinovaginal bulb that grows from the dorsal wall of the urogenital sinus to the level of the Müllerian tubercle (which will become the seminal collicle in the male and hymen in female). The male vagina has a tubular form and it is covered with squamous epithelium. Numerous endocrine cells were found containing neuron-specific enolase, chromogranin and serotonin.

The female prostate can suffer from the same diseases of the male prostate, including carcinoma and flogosis (prostatitis). Male vagina can suffer from the same diseases of the female vagina.

Sexologists have to know the existence of the female prostate and the male vagina.