Question:

The phase of menstrual cycle in humans that last for $7-8$ days, is

Updated On: Aug 1, 2022
  • follicular phase
  • ovulatory phase
  • luteal phase
  • menstruation
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The Correct Option is A

Solution and Explanation

After the menstrual phase is over on the 5th day of menstrual cycle, Follicular phase starts. During this phase, the ovary begins to form a new egg that matures inside the follicle to form the Graffian follicle. The Graffian follicle, releases hormone called oestrogen that prepares the uterus to receive ovum. The uterine walls become thickened and develops a dense network of blood vessels. Finally on the 14th day of menstrual cycle, the Graffian follicle ruptured to release the ovum. This process is called ovulation. Thus Follicular phase starts from the end of menstruation phase to the onset of ovulatory phase, for a period of about 7-8 days.
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Concepts Used:

Female Reproductive System

The female reproductive system provides various functions. The ovaries produce the egg cells known as the ova or oocytes. The oocytes are then taken to the fallopian tube where fertilization by a sperm may occur. The fertilized egg is then transferred to the uterus, where the uterine lining has thickened in regard to the normal hormones of the reproductive cycle. Once in the uterus, the fertilized egg can implant into the thickened uterine lining and continues to develop. If implantation does not take place, the uterine lining is shed as menstrual flow. In addition, the female reproductive system produces female sex hormones that preserve the reproductive cycle.

During menopause, the female reproductive system slowly stops making the female hormones that are required for the reproductive cycle work. At this stage, menstrual cycles can become irregular and finally stops. One year after menstrual cycles pause, the woman is deemed to be menopausal.