Endometrium

The endometrium is the innermost membrane of the uterus. It sensitive to hormone changes and menstrual cycle. The endometrium is shed each month as menstrual flow.^[1][2]

1. ↑ "How the female reproductive system works | girlshealth.gov". www.girlshealth.gov. Retrieved 2018-08-17. This article incorporates text from this source, which is in the public domain.
2. ↑ "Uterus Anatomy: Overview, Gross Anatomy, Natural Variants". 2016-10-28. {{cite journal}}: Cite journal requires |journal= (help)