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in Menstrual Cycle in Woman by (46.2k points)
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What is the Menstrual cycle?

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Menstrual cycle:

  • It is found only in primate females.
  • Its duration is 28 to 30 days in a woman and 35 days in the chimpanzee.
  • In woman, the menstrual cycle begins at an age of 12 years which is called menarche.
  • The menstrual cycle ceases naturally at an age of 45 to 50 years which is called menopause.

The menstrual phase has 4 phases of viz:

  1. Menstrual phase
  2. Follicular phase or Proliferative phase
  3. Ovulatory phase or recovery phase
  4. Luteal phase or secretory phase

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