1.Sperm comes from between the spine/backbone and ribs
The Quran author(s) was ignorant of the actual scientific knowledge except rehashing the prevalent scientific error of his contemporary. Today we know sperm comes from the testicles, not from between the spine and ribs.
He is created from a drop emitted .Proceeding from between the backbone and the ribs Qur'an 86:6-7
2.Only Allah knows what gender the baby is
Current technology, such as sonography, has enabled observation of baby's gender through ultrasonic imaging. There are also sex selection clinics that allow gender determination nowadays.
Verily the knowledge of the Hour is with Allah (alone). It is He Who sends down rain, and He Who knows what is in the wombs. Nor does any one know what it is that he will earn on the morrow: Nor does any one know in what land he is to die. Verily with Allah is full knowledge and He is acquainted (with all things). Qur'an 31:34
3. Ovum contributed by female is not mentioned
The Qur'an author(s) did not mention the role of the ovum due to his sole observation of the sperm during intercourse. This verse fails to mention the important role of the female egg in the reproduction of humankind.
He is created from a drop emitted Qur'an 25:45
4.The blood-clot stage in human reproduction
There was never a stage of blood clot during the formation of humans inside the womb.
Created man, out of a (mere) clot of congealed blood: Qur'an 96:2
5.Womb (stomach) has 3 layers
There are many more layers such as endometrium, myometrium, perimetrium, peritoneum, besides the cervix uteri, corpus uteri, abdomen (with walls), placenta (with layers).
He created you (all) from a single person: then created, of like nature, his mate; and he sent down for you eight head of cattle in pairs: He makes you, in the wombs of your mothers, in stages, one after another, in three veils of darkness. such is Allah, your Lord and Cherisher: to Him belongs (all) dominion. There is no god but He: then how are ye turned away (from your true Centre)?Qur'an 39:6
6.Bones are formed before flesh
The Qur'an elaborates that the bones are formed and wrapped up with flesh. The first muscles are formed before the bones, and the rest are formed simultaneously though.
Then We made the sperm into a clot of congealed blood; then of that clot We made a (foetus) lump; then we made out of that lump bones then (not and) clothed the bones with flesh; then we developed out of it another creature. So blessed be Allah, the best to create! Qur'an 23:14
7.Milk comes from between excrement and blood
The mammary glands where the milk is produced and stored are outside the body, while the excrement is in the intestines which is way inside the body. the two are nowhere near each other. Also, certain cattle milk needs processing, pasteurization, micro-filter, creaming and homogenization.
And verily in cattle (too) will ye find an instructive sign. From what is within their bodies between excretions and blood, We produce, for your drink, milk, pure and agreeable to those who drink it Qur'an 16:66
8.Do humans think with their heart or with their brain?
The author of the Qur'an assumed that humans think with their heart, while in reality we utilize the brain for that purpose.
Behold! they fold up their hearts, that they may lie hid from Him! Ah even when they cover themselves with their garments, He knoweth what they conceal, and what they reveal: for He knoweth well the (inmost secrets) of the hearts. Qur'an 51:49