Question: Is it possible to insert a penis into a woman's cervix? Is the act dangerous, if it is, in fact possible? Is this something that women tend to enjoy, or is it more likely to be painful? I once heard a woman say that a man did penetrate her cervix and that it was painful. If he did not actually enter her cervix, what did happen?
Answer: The opening in the cervix is very very small (See photos shown below). Much of the time spent in delivering a baby is required for the cervix to dilate. A penis cannot enter the cervix. While I have heard this claim before, I do not know what these women are experiencing, since what they claim is physically impossible, for a healthy woman. If the penis does enter the cervix, that would indicate a medical problem.
These images, and others, can be seen seen clearer at the website linked to below:
http://www.gardenoffertility.com/cervix.shtml
From the book A New View of a Woman's Body, Copyright 1981, The Federation of Feminist Women's Health Centers, Illustrated By: Suzann Gage, L Ac, RNC, NP, ISBN 0-9629945-0-2 Pbk.