God Almighty said in his holy book, “We have made you peoples and tribes to know each other.” God honored man for all other creatures, and he made lawful marriages for him to multiply and rebuild the land.
The woman carries the fetus in her womb for nine months, until it is fully developed, and then goes out into the world. The pregnancy passes several steps, and several stages.
How does pregnancy occur? How does a fetus live in the womb from the beginning of its creation until birth?
As we know that the fetus lives in the womb, which is not owned by men, the life of the fetus starts from an egg in the uterus, where the pituitary gland secretes the ovulation stimulating hormone “FSH”, which The eggs begin to grow until the size of 12_14 mm, and then the eggs begin to secrete the hormone estrogen, which stimulates the uterus on the growth of the uterine membrane “endometrium”, a means that feeds and protects the fetus, after the formation of the uterine membrane, The pituitary secrete the hormone “FSH” again in order to stimulate the egg on When the egg comes out, the uterus attaches itself to the uterus, and it waits for the fertilization. Fertilization takes place through the legitimate intercourse between the man and the woman. The sperm enter the uterus, trying to unite with the egg, after the sperm unite with the egg , The egg itself is encased in a shell, so that no other sperm is received, called the fertilized egg “zygote”.
Zygote is the first stage of fetal development, the zygote begins to feed from the uterine membrane, and the uterine membrane continues to grow until it is thick enough to enable the fetus to grow inside.
The fertilized egg “zygote” contains all the genetic characteristics of the fetus, which it inherits from its parents. The process of internal division begins within the egg. The egg is divided into two, and the two to four … Thus, this happens in the first week of pregnancy.
The former is called normal pregnancy, but some people can not conceive normally because of different causes. They tend to have surgical procedures for pregnancy, such as in vitro fertilization, in which sperm is taken from the male, And then take an egg from inside the uterus, and the process of fertilization of the ectopic, and then returned egg to the uterus, to adhere to the wall of the uterus, and often vaccinated more than an egg; for fear that the fertilization process with an egg there is another chance, and most can determine the sex of the fetus In such operations.