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The zona pellucida gradually disappears enabling the cells of the trophoblast to make contact with the cells of the endometrium. (FRC)
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∙ 15y ago
Wiki User
∙ 12y agoimplantation
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Why does mensuration not take place after fertilisation?
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.
When the fertilized ovum implants in the uterine lining it becomes?
The answer to your question is a zygote. From there, it develops to an embryo and a foetus. Happy science!!!
What is it called when the embryo attaches to the wall of the uterus?
Implantation is the medical term meaning attachment of the zygote to the uterine wall. If the zygote does not attach, a period occurs.
The zygote attaching to the uterine wall?
Implantation.
What is the nesting of a fertilized egg in the wall of the uterus?
A fertilized egg is a zygote for the first five days before becoming a blastocyst. It is during the first week after insemination that the zygote will attach to the uterine wall.
What and the lining of the uterus break down?
The uterine lining builds-up following ovulation in preparation for possible pregnancy, to allow the zygote to implant and nourish the growing 'baby'. If pregnancy doesn't occur the drop in progesterone triggers the uterus lining to break down, this is called menstruation.
What happens during the zygote period?
the zygote travels down the fallopian tube and attaches itself to the thick end lining of the uterus.
Where does period blood come out?
Menstruation is the process of the uterus lining shedding to ready itself for possible pregnancy next cycle. The uterine lining builds-up so that if a woman conceives the zygote can implant itself into the uterus to develop into a baby, if that doesn't happen the uterus lining sheds.
What is it called when a blastocyst attaches to the uterine wall?
implantation
What is the attachment of the zygote to the uterine wall called?
Implantation
What single cell reproduces itself after conception?
zygote
Why does the egg cell have cytoplasm with stored food in it?
To nourish the fertilised egg on its perilous journey to the uterus where it will attach itself to the womb lining to receive nourishment. That is why eggs from most species tend to be much larger that the sperm. Because they contain a foodstore for the developing zygote.
