Cu ions released from copper-releasing intra uterine devices (IUDs):
Correct answer: C. Suppress sperm motility
- A. Make uterus unsuitable for implantation
- B. Increase phagocytosis of sperms
- C. Suppress sperm motility
- D. Prevent ovulation
Explanation
Copper-releasing IUDs (i.e., CuT, LNG20) are placed in the uterus of the females. They are efficient birth control methods. Copper ions released by them to suppress the motility and fertilizing capacity of the sperms.
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Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.
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