Fertility control

• What regulates the menstrual cycle?


  It is controlled by four hormones.
• Where is FSH (Follicle-Stimulating Hormone) produced?


  In the pituitary gland.
• What is the role of FSH in the menstrual cycle?


  It causes an egg to mature in one of the ovaries.
• How does FSH affect the follicle?


  It stimulates the follicle to produce oestrogen.
• Where is oestrogen produced?


  In the ovaries.
• What effect does oestrogen have on the uterus?


  It causes the lining of the uterus to grow.
• What does oestrogen stimulate the release of?


  It stimulates the release of LH.
• What does oestrogen inhibit the release of?


  It inhibits the release of FSH.
• Where is LH (Luteinising Hormone) produced?


  By the pituitary gland.
• Taking oestrogen stops FSH which stops the release of an egg
• Taking progesterone creates thick mucus to stop the spem
• What is 'The Pill's main hormones ?

  Progesterone and Oestrogen. 99% effective
• Some other methods of controlling fertility

  The patch

  Contraceptive implant

  Injection of progesterone

  Intrauterine device (IUD)

  Condom

  Diaphragm and spermicide

  Sterilisation

  Abstinence
• To increase fertility , take FSH and LHS drugs , what is downside ?


  Doesn't always work
• How does IVF work ?


  Collect eggs , insert sperm ( ICSI)

  Place in incubator

  Insert into women uterus

  FSH and LHS drugs given
• Pro and con of IVF


  PRO: GOT BABY

  CON: multiple babies =multiple birthday

  Stressful

  Expensive

  Failure rate high
• Some ethics of Ivf


  Embryo destroys = killing potential life

  Genetic selection may mean genetically engineered baby