Connection lost. Please refresh the page.
Get help How to study Login Register
Ready to learn?
Pick your favorite study tool


The decidua is the modified or specialized mucosal lining of the uterus (endometrium) that forms during the pregnancy. 

During its formation, the decidua has several distinct parts, named based on the location of each part in relation to the embryo. The decidua basalis is the portion of the decidua that is related to the chorion and participates with it in the formation of the placenta, becoming the maternal component of the fully formed placenta. The decidua capsularis is the portion of the decidua that overlies the embryo, while the rest of the decidual tissue is parietal decidua.

Embedded in the decidua are the maternal endometrial veins and arteries.

Terminology English: Decidua
Latin: Decidua
Definition Specialized endometrium that forms during pregnancy
Function Participates in the formation of placenta and protects the embryo. 
  1. Sources
+ Show all

Learn everything about the changes in pregnancy with the following study unit: 

Decidua: want to learn more about it?

Our engaging videos, interactive quizzes, in-depth articles and HD atlas are here to get you top results faster.

What do you prefer to learn with?

“I would honestly say that Kenhub cut my study time in half.” – Read more.

Kim Bengochea, Regis University, Denver
© Unless stated otherwise, all content, including illustrations are exclusive property of Kenhub GmbH, and are protected by German and international copyright laws. All rights reserved.

Register now and grab your free ultimate anatomy study guide!