But half of men are embarrassingly unable to correctly label where a woman’s vagina is on a picture of the female body.

Much to their shame, 500 out of 1,000 men failed when asked to identify it on a diagram also showing the vulva, cervix, ovaries and Fallopian tubes.

The finding has been published to raise awareness of how little many of us know about gynaecological cancers. It is a common misconception that the opening of the genitals, the vulva, is the vagina, which is actually further up within the women’s body.