• Adolescents become capable of reproduction when their testes and ovaries begin to produce gametes.

Reproductive Phase in Females

  • In Females, the reproductive phase of life begins at puberty (10-12 years of age and generally lasts till the age of approx 45-50 years).
  • Ova matures and is released by one of the ovaries once in about 28-30 days. A fertilized egg develops pregnancy.
  • Unfertilized eggs along with the thickened lining of the uterus and blood vessels are shed off in the form of bleeding in women once in about 28-30 days is termed MENSTRUATION.
  • Initial menstrual flow begins at puberty and is termed MENARCHE.
  • Stoppage of the menstrual cycle at 45-50 years of age is called MENOPAUSE.

The ability of production of gametes in humans lasts until a certain time period only. This time period varies between males and females.

  • It begins from the age of 10 to 12 years and lasts until the age of 45 to 50 years.
  • When females hit puberty, the eggs or ova start getting mature.
  • One of the ovaries then releases the mature ovum around 28 to 30 days.
  • The wall of the uterus at this time, when the egg is released, becomes thick to hold the egg in case fertilization occurs and the egg develops.
  • When the fertilization does not take place, the lining of the uterus sheds along with the egg and the blood vessels.
  • This results in menstruation or bleeding in females.
  • The first menstrual flow occurs at puberty and is called the Menarche.
  • When the menstrual flow stops, it is termed Menopause.
  • The whole menstrual cycle occurs because of female hormones.