What changes does the egg undergo in the cycle of menstruation?
As is known, sex cells in women are formed at the stage of intrauterine development. Monthly, with the onset of puberty, the egg leaves the follicle for fertilization. Rarely for one cycle in the abdominal cavity can go to 2-3 eggs.
As for the external structure, the female ovum looks like a small, spherical-shaped anatomical formation. Outside it is covered with a dense shell, which protects the inner contents and the core from external negative influences.
When in the body of a woman there is such a process as ovulation, the egg grows slightly and looks "swollen". This softens its outer shell. This is necessary in order to increase the permeability of the membrane for male germ cells during fertilization.
If the time of sexual intercourse coincides with ovulation, the probability of conception is great . After that, the appearance of the female sex cell somewhat changes. The fertilized egg looks almost the same as before, but the outer membrane is again compacted. At the same time, within the cell itself, it is possible to see 2 nuclei (1 from the spermatozoon) using an electron microscope, which merge and begin to divide.
What happens to the egg after ovulation?
If fertilization does not occur, then literally a day after the release the egg dies. All of its organelles, together with the membranes, go out, mixing with menstrual blood and particles of the uterine endometrium. Therefore, if we talk about how the egg looks like with the monthly, it should be noted that by now, as such, it no longer exists. However, at the same time in the ovaries a new germ cell ripens inside the follicle, gradually increasing in size.