claim
During the menstrual phase, the endometrium (the lining of the uterus) is shed and expelled through the cervix and vagina if fertilization has not occurred.
Authors
Sources
- Understanding the Menstrual Cycle: A Breakdown of Its Four Phases www.raleighob.com via serper
Referenced by nodes (4)
- menstrual phase concept
- endometrium concept
- fertilization concept
- uterus concept