Contraception

• What is contraception? 


  A method or device used to prevent pregnancy.
• What must occur for somebody to become pregnant naturally?

  An egg must be released from the ovaries.

  Sperm must reach and fertilise the egg.

  The fertilised egg must implant into the uterus lining.
• Which hormones can hormonal contraceptives contain?

  Oestrogen

  Progesteron
• How can oestrogen act as a contraceptive?


  Inhibit FSH production, so that the eggs can’t mature.
• How can progesterone act as a contraceptive?

  Stimulate the production of mucus in the cervix, so sperm cant enter the uterus.
• What hormones does ‘the pill’ contain?

  Oestrogen

  Progesterone
• Which contraceptive method lasts 3 years?

  Intrauterine device
• How long does the contraceptive patch last?

  One week
• Which method is a small device , injected under the skin?

  Contraceptive implant.
• What are the side effects of the pill?

  Headaches

  Nausea
• How long does the contraceptive injection last for?

  2-3 months
• How does plastic IUD work?

  Placed in uterus.

  Releases progesteron.

  Lasts 3 years.
• How does copper IUD work?

  Non hormonal.

  Prevents sperm by killing it.

  Lasts 3 years.
• How does non hormonal contraception work?

  Prevents sperm from meeting the uterus.
• Condoms are the only method that protect against :

  Sexually transmitted diseases.
• The diaphragm sits over the cervix to prevent sperm from entering the uterus.
• How does spermicide act as a contraceptive?

  Destroy the sperm cells. (NOT very effective).
• If a woman undergoes sterilisation, which structure is cut and tied?

  Fallopian tubes / oviduct.
• If a man undergoes sterilisation, which structure is cut and tied?

  Sperm duct.
• Natural methods of contraception?

  Sex at certain times of the month.

  Stop before ejaculation.

  (unreliable)