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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
Describe the role of pituitary and ovarian hormones during the menstrual cycle in a human female.
Explain the events that occur in a graafian follicle at the time of ovulation and thereafter.
Meanrch, menstrual cycle, and menopause are controlled by ______.
During which phase of the menstrual cycle does the endometrium thicken up to 8-10 mm?
Lack of which hormone results in menstrual flow?
Secretion of progesterone by corpus luteum is initiated by ______.
About which day in a normal human menstrual cycle does rapid secretion of LH (Popularly called LH Surge) normally occurs?
Identify the correct statement from the following:
Spermatogenesis is induced by ______.
Name the following:
Two layers of the wall of uterus.
