Concept
Version 15
Created by Boundless
Uterine (Menstrual) Cycle
![The Uterine Cycle](../../../../../../../../../figures.boundless-cdn.com/5371/full/44-71d4-4133-b8a0-72bcaf2136b4.jpg)
The Uterine Cycle
High estrogen and progesterone levels stimulate increased endometrial thickness, but following their decline from a lack of implantation, the endometrium is shed and menstruation occurs.
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