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  4. All the events of the menstrual cycle stop and there is no menstruation during pregnancy is due to

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Q. All the events of the menstrual cycle stop and there is no menstruation during pregnancy is due to

NTA AbhyasNTA Abhyas 2022

Solution:

After fertilization the corpus luteum and later on placenta also secretes large amount of progesterone which is essential to maintain endometrium for implantation and other pregnancy conditions.