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Which of the following approaches does not give the defined action of contraceptive?
A
Intra uterine devices – Increase phagocytosis of sperms, suppress sperm motility and fertilising capacity of sperms
B
Hormonal contraceptives – Prevents/retards the entry of sperms, prevents ovulation and fertilisation
C
Vasectomy – Prevents spermatogenesis
D
Barrier methods – Prevents fertilisation
Explanation
Vasectomy blocks sperm transport, not sperm production.
Detailed Solution
Vasectomy is a sterilisation procedure in males in which a small part of the vas deferens is removed or tied through a small incision on the scrotum. It blocks the transport of gametes but does not affect spermatogenesis.