The outer layer of uterus is called as:

Explanation

The perimetrium is the outermost layer of the uterus, also known as the serosa. It is a thin layer of tissue that covers the outside of the uterus and is continuous with the peritoneum, the lining of the abdominal cavity. The perimetrium provides a protective covering for the uterus and reduces friction between the uterus and other abdominal organs. It also helps anchor the uterus within the pelvic cavity by connecting to surrounding structures, though it plays a more structural and protective role rather than a functional role in uterine contractions or hormonal regulation.