what happens to the lining of uterus (a) before release of fertilised egg (b) if no fertilization of - Science - How do Organisms Reproduce

Question

what happens to the lining of uterus (a) before release of
fertilised egg ? (b) if no fertilization of ovum does not
ocur??

Nishi Dwivedi · Accepted Answer

Uterus lining becomes thick to receive
fertilized egg but in case if it does not receive fertilized egg,
it sheds during menstrual cycle and goes out of the body in form of
menstrual bleeding

what happens to the lining of uterus (a) before release of fertilised egg ? (b) if no fertilization of ovum does not ocur??