4 Questions
What is the biological process in which women shed the lining of the uterus?
Menstruation
During menstruation, what is the main source of the bleeding?
Uterus
What hormonal change triggers menstruation?
Decrease in estrogen
What is the average duration of a menstrual cycle?
28 days
Test your knowledge of the biological process in which women shed the lining of the uterus, the main source of bleeding during menstruation, the hormonal changes that trigger menstruation, and the average duration of a menstrual cycle.
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