Reproduction

• Role of LH (luteinizing hormone)


  • stimulates the release of an egg from the ovaries
  • secreted by the pituitary gland, in the brain
• Role of FSH (follicle stimulating hormone)


  • stimulates the maturation of an egg in the ovaries
  • secreted by the pituitary gland, in the brain
• Role of estrogen


  • responsible for the building up of the uterus lining during the menstrual cycle
  • produced by the ovaries
  • also responsible for the promotion of secondary sexual characteristics
• Role of progesterone?


  • responsible for the maintaining of the uterus lining during the luteal phase of the menstrual cycle (days 14-28)
  • if fertilisation does not occur, the levels of progesterone drop, leading to the shedding of the uterus lining (menstruation)
• FSH matures the egg and also stimulates increased levels of estrogen production and low progesterone levels
• Endometrium


  The lining of the uterus that sheds during menstruation.