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12 Cards in this Set

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What is mifepristone?
It is a progesterone antagonist. Once conception has occurred, it can induce abortions.
What is mifepristone?
It is a progesterone antagonist. Once conception has occurred, it can induce abortions.
What is the result of a foriegn body(intentional) in the human uterus?
They do not alter the menstrual cycle, butact as effective contraceptive devices. It prevents sperm from fertilizing ova.
What about IUDs containing copper?
They appear to exert a spermicidal effect.
What is the result of IUDs that slowly release progesterone or synthetic progestins?
They thicken cervical mucus so that entry of sperm into the uterus is impeded.
Woman undergoing long term treatment with large doses of estrogen do not ovulate. TRUE/FALSE
TRUE. They have depressed FSH levels and multiple irregular bursts of LH secretion rather than a single middle peak.
Women treated with similar doses of estrogen plus a progestational agent do not ovulate. WHY?
The secretions of both gonadotropins is suppressed. The progestin makes the cervical mucus thick and unfavorable to sperm migration and may also interfere with implantation.
What is ethinyl estradiol?
It is an orally active estrogen, and is often combined with a synthetic progestin such as norethindrone.
How is ethinyl estradiol used?
The pills are given for 21 days, then withdrawn for 5-7 days to permit menstrual flow, and then started again.
Like ethinyl estardiol, norethindrone is effective by mouth . Why?
It has an ethinyl group on position 17 of the steroid nucleus, so it is resistent to hepatic metabolism.
Norethindrone is metabolized to ethinyl estradiol. TRUE/FALSE
TRUE.
What is levonorgestrel?
An implant made up primarily of progestins. These are inserted under the skin and can prevent pregnancy for up to 5 years. They often produce amenorrhea.