Vaginal fornix
The fornices of the vagina are the superior portions of the vagina, extending into the recesses created by the vaginal portion of cervix. The word "fornix" is Latin for "arch".Structure
There are two named fornices:
During sexual intercourse in the missionary position, the tip of the penis reaches the anterior fornix, while in the rear-entry position it reaches the posterior fornix.
The fornices appear to be close to one reported erogenous zone, the cul-de-sac, which is near the posterior fornix.
