The Following Series of 10 Questions Refer to the Accompanying

question 242

Multiple Choice

The following series of 10 questions refer to the accompanying diagram of the uterine-ovarian-hormonal cycle.
-What triggers the events is steps 21 and 22?

• A) rise in estrogen
• B) fall in progesterone
• C) pregnancy
• D) ovulation
• E) none of the above

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