Answer: Increasing phagocytosis of sperm, suppressing sperm motility, and making uterus hostile to implantation.
- A Inhibiting ovulation largely and thickening cervical mucus to help block sperm transit during normal conditions
- B Increasing phagocytosis of sperm, suppressing sperm motility, and making uterus hostile to implantation
- C Releasing a chemical spermicide while also mechanically blocking the narrow cervical os as generally observed
- D Altering circulating hormone levels mainly to prevent ovarian follicle maturation each cycle in typical laboratory settings
Correct answer: B. Increasing phagocytosis of sperm, suppressing sperm motility, and making uterus hostile to implantation
Explanation: Copper IUDs work by releasing copper ions that increase phagocytosis of sperm by macrophages, suppress sperm motility, and create a hostile uterine environment that inhibits implantation.
Contraceptive methods span a spectrum from temporary/natural to permanent/surgical; condoms stand out as the only method offering STI protection alongside contraception.
Concept context
Understand reproductive health, family planning, contraception methods, STIs, population control, and assisted reproductive technologies.