Puberty & menstrual cycle

• What promotes sexual characteristics at puberty?

  • hormones
• What hormone do men release?

  • testosterone
  • produced by testes
• What hormone do women release?

  • oestrogen
  • produced by ovaries
• How many stages does the menstural cycle have?

  • 4 stages
• What are the four stages in order?

  • lining of uterus breaks down
  • lining builds up
  • egg released (ovulation)
  • lining of uterus maintained
• What are the four hormones the menstrual cycle is controlled by?

  • FSH (follicle stimulating)
  • Oestrogen
  • LH (luteinising)
  • Progesterone
• Describe the FSH.

  • produced in pituitary gland
  • egg matures in follicle
  • stimulates ovaries to produce oestrogen
• Describe oestrogen.

  • produced in ovaries
  • lining of uterus grows
  • stimulates release of LH & release of FSH
• Describe LH.

  • Produced by pituitary gland
  • stimulates ovulation
• Describe progesterone.

  • produced in ovaries by remains of follicle after ovulation
  • maintains lining of uterus (2nd half of cycle)
  • Inhibits release of LH and FSH