Birth control pills act as contraceptives by
A)preventing development of the endometrium into a suitable site for implantation
B)preventing ovulation by inhibiting GnRH and thus FSH and LH secretion
C)killing sperm
D)precipitating in the cervical canal to act as a barrier to sperm entry
E)increasing muscular contractions in the female reproductive tract so that ovulated eggs are flushed out before they have a chance to be fertilized

Question

Quizplus · Accepted Answer

Birth control pills primarily work by inhibiting ovulation through the suppression of GnRH, FSH, and LH secretion. This prevents the release of an egg for fertilization. While the pill may also affect the endometrium or cervical mucus, these are secondary contraceptive mechanisms. Killing sperm or increasing muscular contractions are not mechanisms of action for birth control pills.

Birth Control Pills Act as Contraceptives by