Know Your Body

Reproductive System

Human reproduction employs internal fertilization, and depends on the integrated action of hormones, the nervous system, and the reproductive system. Gonads are sex organs that produce gametes. Male gonads are the testes, which produce sperm and male sex hormones. Female gonads are the ovaries, which produce eggs (ova) and female sex hormones.

  • In the womb, the baby's body is covered by a thin layer of hair but as soon as the baby is born it disappears.
  • The largest cell in the female human body is the ovum or egg present in the ovaries.
  • About 500 million sperm mature every day in a normal male adult.
  • The ovaries of a newborn girl contains about 600, 000 immature eggs.
  • The average life span of a sperm is about 36 hours.
  • The life span of an ova is about 12 - 24 hours.
  • The female human body is capable of giving birth to 35 children in one lifetime.

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