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11 Cards in this Set

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hypothalamus

-controls pituitary

pituitary gland

-release hormone that controls another organ

estrogen

-from ovary


-increased at puberty


-exerts positive influence on hypothalamus, increasing secretion of GnRH, thus increasing LH and FSH secretion


-rises during follicular stage


-rising levels of this hormone stimulates proliferation of uterine lining (endometrium)

progesteron

-from ovary


-increase at puberty


-corpus luteum begins to secrete this hormone


-maintain buildup of endometrium and to decrease uterine contractions


-decreased this hormone releases hypothalamus and pituitary from inhibition

LH (luteinizing hormone)

-from anterior pituitary


-triggers ovulation



FSH (follicle stimulation hormone)

-from anterior pituitary


-initiates development of primary follicles each month



GnRH (gonadotropin-releasing hormone)

-from hypothalamus


-increase in secretion of LH and FSH

HCG (human chorionic gonadotropin)

-implanted fertilized egg secretes this hormone if pregnancy results


-stimulates corpus luteum to keep secreting progesterone and a little estrogen to maintain the uterine lining


-this is what gives a positive pregnancy test

placenta

-at about three months gestation, this begins to secretes its own progesterone and estroen

prolactin

-anterior pituitary gland


-stimulates milk production

oxytocin

-posterior pituitary gland


-uterine contraction to begin labor


-stimulates the release of milk