Rectouterine pouch (of Douglas)
Excavatio rectouterina · Douglasův prostor (rektouterinní zákoutí)
Fascia & connective tissue · female only
Looks like
A dip of the abdominal lining between the back of the womb and the rectum — the lowest point when standing.
What it does
Nothing of its own: it is where the lining folds.
Keeping it well
Nothing routine; blood, pus and cancer cells collect here, and it is where a needle or scope is aimed to find them.