Oral contraceptives primarily prevent conception by
A)reducing the number of sperm that penetrate the cervix by thickening cervical mucus.
B)blocking sperm from reaching the ovum.
C)changing the acidity of the vaginal canal.
D)preventing ovulation by mimicking the hormonal activity of the corpus luteum.

Question

Quizplus · Accepted Answer

Oral contraceptives prevent ovulation by mimicking the hormonal activity of the corpus luteum. This prevents the release of an egg and, therefore, prevents pregnancy. While some oral contraceptives may also thicken cervical mucus to reduce the number of sperm that reach the egg or affect the acidity of the vaginal canal, these are not the primary mechanisms of action. Blocking sperm from reaching the ovum is not a mechanism of oral contraceptives.

Oral Contraceptives Primarily Prevent Conception by