hormones and the menstrual cycle

• Hormonal contraception (pills, implants or injections) release hormones to raise hormone concentration.
• Oestrogen prevents egg release because it inhibits FSH.

  Progesterone stimulates production of thick cervical mucus so sperm doesn’t enter the uterus and reach the egg.
• Fertility drugs (clomifene) causes an increase in hormones FSH & LH.
• 1. Fertility drug taken by woman to stimulate egg maturity.
  2. Eggs taken from ovary.
  3. Eggs mixed with sperm in a dish for fertilisation.
  4. Fertilised eggs develop into embryos.
  5. Once embryo are tiny balls of cells, one of 2 are placed in mother’s womb for development.