The wall of the uterus has three layers:

Endometrium is a type of mucosa that changes a lot during a woman’s menstrual cycle.

The basal layer, also called the basal layer or stratum basalis, is the lower third of the mucosa. It stays in place during menstruation and helps the functional layer grow back.

Early secretory glands are marked by the fact that they store glycogen at the base of the epithelial cells.