If an egg is not fertilized, the corpus luteum breaks down, causing a drop in progesterone levels that triggers the shedding of the uterine lining and the start of the next menstrual cycle.

Authors

• Person: Not available Organization: Raleigh OB/GYN Centre
  Understanding the Menstrual Cycle: A Breakdown of Its Four Phases

Sources

• Understanding the Menstrual Cycle: A Breakdown of Its Four Phases www.raleighob.com Raleigh OB/GYN Centre via serper

Referenced by nodes (4)

• progesterone concept
• corpus luteum concept
• endometrial lining concept
• menstrual cycle concept