The menstrual phase begins on the first day of a period and typically lasts about five days, occurring when an egg from the previous cycle is not fertilized and the lining of the uterus is shed as blood.

Authors

• Person: Not available Organization: NewYork-Presbyterian
  Cycle Syncing: How to Understand Your Menstrual Cycle to Reduce ...

Sources

• Cycle Syncing: How to Understand Your Menstrual Cycle to Reduce ... healthmatters.nyp.org NewYork-Presbyterian via serper

Referenced by nodes (3)

• menstrual phase concept
• uterus concept
• blood concept