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प्रश्न
Why menstrual cycle does not take place before puberty and during pregnancy?
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उत्तर
The reproducing period of a women’s life starts and becomes functional and an increase in sex hormone production starts only in puberty. So the menstrual cycle does not take place before puberty. The release of a mature egg, maintains the lining of the uterus, during pregnancy. During pregnancy, the placenta produces progesterone. This maintains the lining of the uterus during pregnancy and means that menstruation does not happen.
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संबंधित प्रश्न
Give appropriate biological or technical terms for the following:
The onset of menstruation in a young girl
Draw a neat and well-labeled diagram showing T.S. of the ovary and describe the menstrual cycle in human females.
Lack of which hormone results in menstrual flow?
Choose the correct order of phases of the menstrual cycle.
All occur during follicular phase of menstrual cycle, EXCEPT
When does the following step take place?
Mature Graafian follicle is generally present in the ovary of a healthy human female around stet ______.
The growth of corpus luteum is initiated by:
Why are menstrual cycles absent during pregnancy?
Describe hormonal control in various phases of the menstrual cycle.
