32. Does the hypophysis ovaries endocrine axis work in
the same way during
pregnancy as in non-pregnant
women? If pregnancy does
not occur how does another
menstrual cycle begin?

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The functioning of the
altered during pregnancy. Since
and progesterone levels
remain during the gestational
period production of GnRH
(gonadotropin-releasing ) from
the hypothalamus is . The lack
of GnRH inhibits the secretion of
and LH from the and a
new menstrual does not begin.
If does not occur the
ofestrogen and progesterone
levels the production of
GnRH the hypothalamus. This
hormone hastens the
adenohypophyseal secretion FHS and
LH that their turn stimulate the
of follicles and the
of a new menstrual .