The function of copper ions in copper-releasing $IUDs$ is:

  • A
    they inhibit gametogenesis
  • B
    they make the uterus unsuitable for implantation
  • C
    they inhibit ovulation
  • D
    they suppress sperm motility and the fertilising capacity of sperms

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Female condoms are known as:

An example of a hormone-releasing $IUD$ is:

These methods of birth control are highly effective,but their reversibility is very poor.

$A$: Periodic abstinence is a natural method of contraception in which couples avoid or abstain from coitus from day $10$ to $17$ of the menstrual cycle,when ovulation is expected.
$R$: Day $10$ to day $17$ of the menstrual cycle is considered a safe period.

Which of the following is a non-steroidal oral contraceptive pill taken once a week?

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