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. Posterior surface of the uterus is completely covered by the perimetrium, but anterior surface only partially.