General Science Reproductive System Flash Card Set 489782

Card 3 of 10
Menstruation

If the ovum fails to become fertilized, the lining of the uterus sloughs off during menstruation. From puberty to menopause, this cycle of menstruation repeats monthly (except during pregnancy).

menstruation

If the ovum fails to become fertilized, the lining of the uterus sloughs off during __________.