Question 8 • *GV 2018 - P.E. Health Science Concepts - PE361
Menstruation occurs when an egg has not been fertilized and the thickened uterine lining is shed through the vagina. Choice D correctly describes the shedding of the uterine lining. An unfertilized egg may leave the body during menstruation, but its release alone is not what defines menstruation.
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