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Douglas pouch

Peritoneal space or pouch formed by a fold of peritoneum between the rectum and the uterus of the female human body.
In humans, Douglas pouch is the female counterpart of the rectovesical excavation in males. This space is used in end-stage renal failure dialysis where the tip of the catheter is placed.
Word origin: named after the Scottish anatomist Dr James Douglas who extensively explored this region of the female body.

Compare: rectovesical excavation.

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