puberty and menstrual cycle

• describe puberty

  reproductive hormones cause secondary sex characteristics
• describe oestrogen

  main female reproductive hormone produced in ovary involved in menstrual cycle
• describe testosterone

  main male reproductive hormone produced by testes for sperm production
• describe stage one of menstrual cycle

  menstruation - uterus lining break down with period of bleeding
• describe stage two of menstrual cycle

  uterus lining build up
• describe stage three of menstrual cycle

  ovulation - egg released from ovary
• describe stage four of menstrual cycle

  uterus lining maintained until next cycle
• describe function of fsh

  stimulate egg maturation and production of oestrogen
• describe function of oestrogen

  stimulate uterus lining to grow, inhibit fsh release and stimulate lh release
• describe function of lh

  stimulate egg release
• describe function of progesterone

  maintain uterus lining and inhibit release of fsh and lh