# Perimetrium

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{{Short description|Layer of the wall of the uterus}}
{{Infobox anatomy
| Name        = Perimetrium
| Latin       = perimetrium, tunica serosa uteri
| Image       = Illu cervix.svg
| Caption     = [Uterus](/source/Uterus) and [uterine tube](/source/uterine_tube)s (Perimetrium labeled at bottom right)
| Image2      = 
| Caption2    =
| Precursor   =
| System      =
| Artery      =
| Vein        =
| Nerve       =
| Lymph       =
}}
The '''perimetrium''' (or '''serous coat of uterus''') is the outer [serosa](/source/serosa)l layer of the [uterus](/source/uterus), derived from the [peritoneum](/source/peritoneum) overlying the [uterine fundus](/source/uterine_fundus), and can be considered a [visceral peritoneum](/source/visceral_peritoneum).  It consists of a superficial layer of [mesothelium](/source/mesothelium), and a thin layer of [loose connective tissue](/source/loose_connective_tissue) beneath it.

Anteriorly, the perimetrium covers the fundus and upper body of the uterus until it meets the superoposterior surface of the adjacent [urinary bladder](/source/urinary_bladder), resulting in a concave fold of peritoneum called the ''[vesicouterine pouch](/source/vesicouterine_pouch)''.  Posteriorly, the perimetrium covers the entire surface of the uterus deep down to the [cervix](/source/cervix), where it then folds back onto the adjacent [rectum](/source/rectum) to form the ''[rectouterine pouch](/source/rectouterine_pouch)'', the lowest gutter of the [peritoneal cavity](/source/peritoneal_cavity).  Laterally, the perimetrium blends into the [serosa](/source/serosa)e of the [broad ligament](/source/broad_ligament)s.<ref>Manual of Obstetrics. (3rd ed.). Elsevier. pp. 1-16. {{ISBN|9788131225561}}.</ref><ref>{{cite book |last1=Ross |first1=Michael H. |last2=Pawlina |first2=Wojciech|edition=Sixth |title=Histology, a text and atlas|page=848}}</ref>

==References==
{{Reflist}}
==External links==
* {{SUNYAnatomyLabs|43|09|02|03}} - "The Female Pelvis: The uterus"
* {{UCDavisOrganology|Reproductive/mammal/uterus0/uterus1}} - "Mammal, uterus (LM, Low)"

{{commonscat|Histology of perimetrium}}

{{Female reproductive system}}

Category:Mammal female reproductive system

{{genitourinary-stub}}

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Adapted from the Wikipedia article [Perimetrium](https://en.wikipedia.org/wiki/Perimetrium) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Perimetrium?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.