Does the corpus luteum operate independently of the hypothalamic-hypophyseal-ovarian axis? I know that hCG sustains the corpus luteum in the absence of FSH and LH, but in an ovarian cycle where there is no pregnancy, do FSH and LH affect the corpus luteum? It seems to produce a lot of estrogens and progesterone even when FSH and LH levels are low.
(Online I saw that the corpus luteum degenerates because of low FSH and LH levels. Is this true? Why doesn’t the corpus luteum degenerate immediately after the LH surge, then, whereafter FSH and LH levels are so low? If not, then why does the corpus luteum degenerate?)