Q6 of 8 Page 10

When does a female attains her puberty? What changes occur in the reproductive system during this stage?

  • A female attains puberty at about ---
  • It is the period of beginning of menstruation called Menarche.
  • The menstrual cycle occurs and it last for about 28 days.
  • Menstrual cycle is under the control of hormone system (estrogen and progesteron)
  • Menopause occurs when this cycle eventually ceases, between the ages of 45 and 55.

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4 List some characters produced due to the action of the testosterone and estrogen.  5 Write short notes on the benefits of exercise. 7 Discuss about the structural changes in the human body that occurs during the onset of puberty. 8 How sex is determined in an unborn infant?