State the changes that take place in the uterus when:(I)Implantation of embryo has occurred(ii) Female gamete /egg is not fertilised
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The changes that occur in uterus .
I) When egg is fertilised
The uterus has three layers namely Edometrium,Perimetrium and myometrium (From outside)
The embryo is implanted in endometrium.As the implantation occurs the linings of uterus become thick.
II) When egg is not fertilised
The endometrium bears certain muscles which starts to break and come out through vagina as menstruation flow.
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The changes that occur in uterus .
I) When egg is fertilised
The uterus has three layers namely Edometrium,Perimetrium and myometrium (From outside)
The embryo is implanted in endometrium.As the implantation occurs the linings of uterus become thick.
II) When egg is not fertilised
The endometrium bears certain muscles which starts to break and come out through vagina as menstruation flow.
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A) the uterine walls thickens.
B) Menstruation occurs .
B) Menstruation occurs .
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