21.How does the hypophysiscorpus luteum negative
feedback work? What is the
name given to theatrophied
corpus luteum after this
feedback process?

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After ovulation the estrogen
progesterone secretions from the
luteum inhibit the hypophyseal and
LH secretions (this by inhibition
of GnRH, -releasing
hormone, a hypothalamic hormone).
blood concentration of these
hormones falls to
basal again. As LH lowers
corpus luteum (luteum means “”)
becomes atrophic and turns the
corpus albicans (“white”). the
regression of the luteum the
production of and
progesterone ceases.