For women, the uterine lining sheds, in the physiological term of menstruation. In rabbits, nothing happens. They just keep going in and out of heat until fertilization does occur. The same goes for cows and heifers.
The woman dies and the body consumes it self
The thick uterine lining is necessary in preparation for a potential pregnancy. If fertilization does not occur, the lining is shed during menstruation. A thick lining ensures a hospitable environment for a fertilized egg to implant and grow.
The uterine lining builds-up in preparation for fertilization so that the zygote/embryo can implant itself into the uterine lining and then develop into a baby. Menstruation only takes place when fertilization doesn't take place, this occurs so the uterine lining is shed and can start a fresh next cycle so it can be ready for pregnancy again. If the uterine lining were to break down after fertilization a zygote/embryo wouldn't be able to implant itself or it would result in miscarriage.
No, the uterus does not begin growing until after the embryo implants in the uterine lining.
Breaks down
breaks down
It attaches to the uterine lining.
Fertilization would be when conception occurs, if the fertilized egg implants itself in the uterus lining this is when pregnancy occurs and thus the menstrual cycles stop. Although fertilization doesn't always result in pregnancy, and pregnancy can miscarry at any point.
Hopefully it implants to the uterine lining and grows into a fetus
The menstrual cycle is the process by which a woman's body prepares for the possibility of pregnancy each month. The cycle is regulated by hormones and involves the shedding of the uterine lining if no fertilization occurs. This shedding of the uterine lining is what causes menstruation, also known as a period.
After ovulation in the menstrual cycle, the ovum travels down the fallopian tube towards the uterus. If fertilization does not occur, the ovum disintegrates and is shed along with the uterine lining during menstruation.
the embryo attaches the mother