Final answer:
When ovulatory function ceases, there is a decrease in estrogen and progesterone levels. The degeneration of the corpus luteum and the release of GnRH by the hypothalamus contribute to this. The decrease in hormone levels is followed by the initiation of the next menstrual cycle.
Step-by-step explanation:
When ovulatory function ceases, there are specific hormone level findings that occur. One consistent finding is a decrease in the levels of estrogen and progesterone. This decrease in hormone levels is due to the degeneration of the corpus luteum if pregnancy does not occur. Additionally, the hypothalamus sends GnRH to the anterior pituitary, which releases FSH and LH, initiating the next menstrual cycle.