Oral contraceptive pills prevent pregnancy mainly by
Correct answer: D. suppressing ovulation through their oestrogen and progesterone content
- A. killing sperm in the vagina
- B. blocking the oviducts mechanically
- C. thickening the cervical mucus only
- D. suppressing ovulation through their oestrogen and progesterone content
Explanation
The steady hormones of the pill inhibit FSH and LH, so no follicle matures and no egg is released. Thickened cervical mucus adds a secondary barrier, but the suppression of ovulation is the principal mechanism.
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About Human Reproductive System
The human reproductive system includes the male and female organs that produce gametes, secrete sex hormones and support fertilization and development. Questions cover the testes, ovaries, reproductive ducts, menstrual and ovarian cycles, ovulation, fertilization, implantation, placenta formation and the roles of FSH, LH, oestrogen, progesterone and testosterone.
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