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Which of the following approaches does not give the defined action of contraceptive?

1. Barrier methods prevent fertilization
2. Intra uterine devices increase phagocytosis of sperms, suppress sperm motility and fertilizing capacity of sperms
3. Hormonal contraceptives prevent/retard entry of sperms, prevent ovulation and fertilization
4. Vasectomy prevents spermatogenesis

Correct answer: Vasectomy prevents spermatogenesis

Solution

Vasectomy is a surgical method that cuts/blocks the vas deferens, so sperm cannot enter the semen. It does not stop spermatogenesis, which continues in the testes.

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