What is the mechanism whereby estrogen functions as a contraceptive?
a. Inhibiting luteinizing hormone (LH), blocking release of ovum from a follicle
b. Thinning cervical mucus, which inhibits sperm migration
c. Trapping the ovum in the endometrial wall, preventing its growth
d. Blocking follicle-stimulating hormone (FSH), thereby preventing release of ovum
ANS: D
Estrogens block pituitary release of FSH, preventing the ovaries from developing a follicle from which the ovum is released. Progestins inhibit pituitary release of LH, the hormone responsible for releasing an ovum from a follicle. Estrogens and progestins alter cervical mucus by making it thick and viscous, inhibiting sperm migration. Hormones also change the endometrial wall, impairing implantation of the fertilized ovum.
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Which of the following strategies would a nurse expect to be implemented by a typical state environmental agency? (Select all that apply.)
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Answer the following statement true (T) or false (F)
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