The perimetrium (or serous coat of uterus) is the outer serosa layer of the uterus, equivalent to peritoneum. It is embrionically derived from visceral peritoneum. Perimetrium consists of superficial mesothelium, and a thin layer of loose connective tissue beneath it. The posterior surface of the uterus is completely covered by the perimetrium, but the anterior surface only partially.[1][2]

Uterus and uterine tubes (Perimetrium labeled at bottom right)
LatinPerimetrium, tunica serosa uteri
Anatomical terminology


  1. Manual of Obstetrics. (3rd ed.). Elsevier. pp. 1-16. ISBN 9788131225561.
  2. Ross, Michael H.; Pawlina, Wojciech. Histology, a text and atlas (Sixth ed.). p. 848.

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