The sperms are formed in the testicles, which in turn are created, as proved by embryology, from cells underneath the kidneys at the back and then go down to the lower abdomen at the last weeks of pregnancy. Man’s fluid mainly contains the following components: the sperms which should be gushing, and motile to cause fertilization and Prostaglandin which causes contractions to the uterus, thus helping the transport of sperms into the place of fertilization. The man's fluid (semen) contains also sugar necessary for providing energy for the sperms, different fluids for neutralising the acids at the entrance of the uterus and creating a slippery environment for the easy movement of the sperms.
The sperm contains 23 chromosomes, of which one chromosome determines the sex of the embryo. The chromosome in the sperm is either (Y) or (X), while the chromosome in the ovum is always (X). When a sperm of the chromosome type (Y) mingles with an ovum of the chromosome (X), the formed zygote will be male (XY), whereas the embryo will be female (XX) if the sperm (X) mingles with an (X) ovum. So, the sex of the embryo is determined by the sperm (the male), rather than the ovum (the female).
After 5 hours of forming the zygote, which is the primary human cell containing 46 chromosomes, the dominant and recessive genetic characteristics can appear in the parent's sons or grandsons (the stage of genetic programming) . The zygote is then divided quickly (Fig. 2) without a change in size and move from the Fallopian Tube (connecting the ovary and the uterus) towards the uterus, where it is implanted as seeds are implanted in the soil.
(Fig. 1) Of hundreds of sperms, only one can fertilize the ovum.
(Fig. 2) The zygote divides within hours of the process of fertilization. (a picture taken by the Microscope)
The Uterus is the place where the embryo grows and develops before emerging as a fully created and well formed child. The uterus is distinguished as a safe place to perform this function for the following reasons:
1- The location of the uterus in the woman’s pelvis, where it is protected with ligaments and fascia that hold the uterus from the sides and allow its mobility and growth to hundred times its size at full term pregnancy.
2- Muscles of pelvis and perineum fix the uterus in-situ.
3- The secretion of Progesterone (pregnancy hormone) helps stabilize the uterus and slows down the uterine contractions.
4- The embryo in uterus is surrounded with different membranes that produce amniotic fluid which the embryo swims in to protect the embryo from the effect of external traumas .
The process of fertilization and the travel of the zygote to the uterus continue for about 6 days, and the zygote keeps implanting ( known as blastocyst) and growing in the uterus wall for 15 days, when the Alaqa (thick clotted blood) stage begins.
Reflections and comments on related Quranic verses:
“Nutfa” in Arabic means “very little water” or “a drop of water”. This coincides with man’s water which contain sperms as part of its components. The sperm or (spermatozoon) is reproduced from the despised lowly water (nutfa) and looks like a long-tailed fish (this is one of the meanings of Sulalah). Allah Almighty says:
He It is Who created all things in the best way and began the creation of man from clay, and made his progeny from an extract of despised fluid (sulalah)
Clarifying the role of the nutfa in creation, He the Almighty says;
“So, let man consider of what he was created . He was created of gushing water ”
(Qur’an 86: 5-6)
(Qur’an 16: 4).
The Quran tells us also that the essence of man is not the whole semen, but only a small part of it. this is explained in the Quran :
(Without purpose) Does man think that he will be left uncontrolled. Was he not once a fluide of drop, ejected semen?
As we have seen, the Qur’an informs us that man is made not from the entire semen, but only a small part of it. That the particular emphasis in this statement announces a fact only discovered by modern science is evidence that the statement is divine in origin. The divine statement also reiterates that man’s characteristics are determined and decreed in the nutfa stage, as He says;
“Woe to man! What has made him reject (Allah)? From what stuff has He created him? From a nutfa (fluid-drop) He has created him, and then moulds him in due proportions.”
(Qur’an 80: 17-19)
And Allah says :
“Verily We created man of a fluid-drop (nutfa), mingling (amshaj) , in order to try him: so We gave him (the gifts of) hearing and sight.”
Has anyone ever thought, before the Quran was revealed, that man’s nutfa, when ejected, is responsible for determining if the embryo will be male or female? Has this ever occurred to one’s mind? The Quran says;
“That He created the pairs, male and female, from a fluid-drop sperm as it is emitted.”
(Qur’an 53: 45-46),
confirming that man’s gender as male or female is determined when the sperm drop is emitted. Who told the Prophet Mohammed that the sperm (nutfa) with one of its types (Y) or (X) is responsible for determining the sex of the embryo? This was not discovered except after the invention of microscopes in the past century, when it was possible then to know that the embryo being a male or female is only determined by the sperm (nutfa), rather than the ovum. In other words, we were in the beginning of the 20th century and the whole of mankind were not aware that the nutfa decrees if the embryo is male or female. While the Quran, which was revealed 14 centuries ago, has stated this fact in a very clear manner.
Here is a remarkable note! We have mentioned earlier that the sperms are formed in the testicles, which in turn are created, as proved by embryology, from cells underneath the kidneys at the back and then go down to the lower abdomen at the last weeks of pregnancy. This is in confirmation of Allah’s saying :
“And remember when your Lord brought forth from the children of Adam, from their loins, their seeds…”
(Qur’an 7: 172)
The uterus, as mentioned before, is considered as a place settled (Makeen) and safe for the growth and protection of the embryo, according to reasons mentioned earlier. We find that Quran mentions and affirms this fact 14 centuries ago, as He Almighty says:
”The which (embryo) We placed in a place of settlement, firmly fixed for a period (of gestation), determined. For We do determine, for We are the best to determine (things).
(Qur’an 77: 21-23)