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Menstrual cycle ceases during pregna...

Menstrual cycle ceases during pregnancy .

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Pregnancy begins soon after the formation of zygote after fertilization.
Following this the uterus, accessory organs and glands of female reproductive system get ready to receive the zygote and nourish it.
Menstruation occurs by disintegration of the uterine wall and corpus luteum, if fertilization has not occurred. Therefore during pregnancy menstruation ceases and this continues till parturition or child birth.
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