Hormones in Human Reproduction (OCR Gateway GCSE Biology: Combined Science)

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Hormones in Human Reproduction

  • Hormones play a key role in human reproduction
  • During puberty, reproductive hormones cause secondary sex characteristics to develop

Male reproductive hormones

    • The main male reproductive hormone is testosterone which is produced by the testes;
      • Testosterone stimulates...
        • Sperm production
        • Growth of body hair
        • Growth of penis and testes
        • Muscle development
        • Deepening of the voice


Male secondary sexual characteristics

Female reproductive hormones

  • The main female reproductive hormone is oestrogen which is produced by the ovaries
    • Oestrogen plays an important role in the menstrual cycle which begins at puberty,
    • It also causes physical changes to occur in the body...
      • Breast development
      • Widening of hips
      • Growth of body hair
    • Other key female reproductive hormones include
      • Progesterone which is responsible for maintaining the lining of the uterus
      • Follicle stimulating hormone (FSH) that is responsible for stimulating the maturation of an egg in the ovary
      • Luteinising hormone (LH) which is responsible for ovulation of the egg once matured

Female secondary sexual characteristics table

Female secondary sexual characteristics

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