The female sexual response includes arousal and orgasm,
but there is no ejaculation. A woman may become pregnant
without having an orgasm.
Follicle-stimulating hormone, luteinizing hormone, estrogen,
and progesterone have major roles in regulating the functions
of the female reproductive system.
At puberty, when the ovaries and uterus are mature enough
to respond to hormonal stimulation, certain stimuli cause
the hypothalamus to start secreting gonadotropin-releasing
hormone. This
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hormone enters the blood and goes to the anterior pituitary gland where
it stimulates the secretion of follicle-stimulating hormone and luteinizing
hormone. These hormones, in turn, affect the ovaries and uterus and
the monthly cycles begin. A woman's reproductive cycles last from
menarche to menopause.
The monthly ovarian cycle begins with the follicle development
during the follicular phase, continues with ovulation during the
ovulatory phase, and concludes with the development and regression
of the corpus
luteum during the luteal phase.
The uterine cycle takes place simultaneously with the ovarian cycle.
The uterine cycle begins with menstruation during the menstrual
phase, continues with repair of the endometrium during the proliferative
phase, and ends with the growth of glands and blood vessels during
the secretory phase.
Menopause occurs when a woman's reproductive cycles stop. This
period is marked by decreased levels of ovarian hormones and increased
levels of pituitary follicle-stimulating hormone and luteinizing
hormone. The changing hormone levels are responsible for the symptoms
associated with menopause.

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