embryo
In human development, the first cell divisions occur in the salpinx of the woman, before the embryo is implanted in the uterus
Yes, this is the process of IVF with donor eggs.
menstruation
sex
The zygote, which is a fertilized egg, grows to maturity in the uterus.
A blastocyst.
embryo
In human development, the first cell divisions occur in the salpinx of the woman, before the embryo is implanted in the uterus
Yes, this is the process of IVF with donor eggs.
No and no. Sperm doesn't fuse with other sperms.
At a time in the menstrual cycle of the females , ovulation occurs ; If sexual intercourse occurs at this time , the sperms from a male mostly fertilize the female's egg cell ( Fertilization has occurred) ; So a zygote forms in the oviduct , which moves along it to be implanted in the walls of the Uterus ( Endometrium ) , so the Corpus Leuteum keeps on secreting progesterone to maintain the thickened walls of the Uterus . Consequently , The walls of the Uterus don't break down , because a Blastula was implanted in it earlier , so pregnancy starts , and the placenta starts to form .
Scientifically speaking, the product is a zygote. A zygote is the term for a fertilized egg in its early stages of development and when it has not yet arrived at the uterus(the egg is fertilized at the fallopian tubes). When it has attached itself to the uterus, it is called a blastocyte. After 7 to 10 days after the fertilization, it is called a gastrula. When the stem cells have fully specialized, it is called a embryo.
menstruation
uterus
uterus
No. They will contain abnormal cells and cancer if implanted.
the lining of the uterus thickens,