The school nurse is teaching a group of middle-school students about the female reproductive system.Which statement by a student most accurately describes the reason menstruation begins?

Question

Quizplus · Accepted Answer

Menstruation begins when the levels of estrogen and progesterone drop, which is a signal from the brain that the uterine lining can be shed. This shedding of the uterine lining is what causes menstruation. Option A is incorrect as the uterus does not contract to start menstruation. Option C is incorrect as the menstrual cycle can vary in length and still be considered normal. Option D is incorrect as ovulation is a separate process from menstruation.

The School Nurse Is Teaching a Group of Middle-School Students