What changes are observed in the uterus if fertilisation does not occur?
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If fertilization does not occur in the uterus, the corpus luteum will involute and there will be a drop in the hormone levels, which will cause the uterus to shed its lining and egg in the process called menstruation, where there is blood and uterine secretions are removed through the vagina.
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heya mate!!
The thick and the spongy lining of the uterus slowly breaks and comes out through the vagina as blood and mucous is fertilisation does not occur. This is known as menstruation and at last for about 2 to 8 days.
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