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Reproduction, fertility and contraception (CCEA)Infertility

Most animals carry out sexual reproduction. Sexual reproduction involves the joining of two sex cells (gametes) – the sperm (male gamete) and the egg/ovum (female gamete).

Part of Biology (Single Science)Body systems

Infertility

Causes of female infertility

  • don’t produce eggs.
  • Blocked/twisted (maybe due to infection).
  • Complication from a previous (for example, chlamydia)
  • lining not developing enough to allow embryo .
  • too hostile to allow to enter (e.g. too acidic).

Causes of male infertility

  • Not enough sperm produced.
  • Non-healthy sperm produced (can be due to smoking or drinking alcohol to excess).
  • Impotence.

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