Since the endometrium develops as a function of the hormones that act throughout the menstrual cycle, estrogen and progesterone, it also has two different phases:
- Proliferative endometrium: its thickness increases little by little thanks to the effect of estrogens.
- Secretory endometrium: it matures and becomes receptive thanks to progesterone secreted by the corpus luteum.
An ultrasound can be used to measure the endometrial thickness and find out what stage it is in.
Suggested for you: The Different Phases of the Menstrual Cycle.