Examlex
Which one of the following structures degenerates if a fertilized egg does not embed in the uterus?
Interaction
A reciprocal action or influence between two or more entities, substances, or individuals.
Fertilized Egg
A fertilized egg, also known as a zygote, is the initial stage of development resulting from the union of a sperm cell and an egg cell, marking the beginning of pregnancy.
Fetus
A developing mammal or human within the womb, after the embryonic stage and before birth.
Embryo
An embryo is an early stage of development of a multicellular organism following fertilization, prior to becoming a fetus.
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