The endometrium also has simple columnar epithelium, endometrial stroma, and cysts. The endometrial stroma is the underlying lamina propia that is highly cellular. It consists of stellate cells, macrophages, and lymphocytes. This tissue slide also has cysts, which are the remnants of former uterine glands.

The myometrium also has three distinct layers of smooth muscle: inner and outer longitudinal layers and a middle circular layer.

Lastly, the uterus has a perimetrium layer. An outer serous layer or visceral peritoneum covers this layer.