Female pelvis and its contents, seen from above and in front. (Sacrogenital fold labeled at bottom left.)
These folds of the rectouterine excavation are named the sacrogenital or rectouterine folds.
They contain a considerable amount of fibrous tissue and non-striped muscular fibers which are attached to the front of the sacrum and constitute the uterosacral ligaments.
This article incorporates text from a public domain edition of Gray's Anatomy.