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1) What happens in the ovary and in the bloodstream that brings about this change in the uterus? 2) Why does the level of FSH decrease and remain at a relatively low level during the luteal phase of the cycle?

For 1 I was thinking: So estrogen levels increase and the follicle matures which first cause menstruation and then the lining reforms?? For 2 I was thinking: the follicle has already ruptured by the luteal phase

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  • $\begingroup$ I addressed this topic in an answer to a related question. Although it’s a different question, I think both of yours are answered in the background I provided in that answer. (P.S. You need to specify what you’re referring to by “this” change in the first question - probably either a proliferative or secretory endometrium, or maybe menstruation? Or if it corresponds to the title, do you mean the entire cycle - “these changes”?) $\endgroup$
    – Susan
    Commented Jun 1, 2015 at 3:35
  • $\begingroup$ Please expand on he abbreviation FSH $\endgroup$
    – rg255
    Commented Jun 1, 2015 at 5:45
  • $\begingroup$ This sounds quite a lot like a homework/exam question, so I added the relevant tag. $\endgroup$
    – skymningen
    Commented Jun 1, 2015 at 9:11

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