How do birth control pills act as contraceptives
A)by preventing development of the endometrium into a suitable site for implantation
B)by preventing ovulation and inhibiting GnRH and thus FSH and LH secretion
C)by killing sperm
D)by 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 contain synthetic hormones that inhibit the secretion of GnRH, FSH, and LH, which prevents ovulation from occurring. Without ovulation, there can be no fertilization and pregnancy.

How Do Birth Control Pills Act as Contraceptives