Embryology in the Quran: Difference between revisions

{{Quote|{{Quran-range|3|59}}|'''Pickthall:'''Lo! the likeness of Jesus with Allah is as the likeness of Adam. He created him of dust [turabin تُرَابٍ], then He said unto him: Be! and he is.}}

{{Quote|{{Quran-range|15|26}}|'''Yusuf Ali:'''We created man from sounding clay [salsalin صَلْصَٰلٍ], from mud [hamain حَمَإٍ] molded into shape;}}

Also flawed is a related claim, that 'alaqah is used here in its meaning of a suspended, or hanging thing, because the early embryo is attached via a connecting stalk to the uterine wall. The problem is that not all embryos hang downwards below their connecting stalk. Rather it depends where in the uterus implantation occurs. The uterus lies fairly horizontal at this time, so depending on the side of the uterus implantation occurs, the early embryo can also be above its stalk, as this diagram<ref>[{{Reference archive|1=http://www.babycenter.com/fetal-development-twins-images-4-weeks|2=2013-06-01}} Fraternal twins in the womb -- 4 weeks] -  BabyCenter Medical Advisory Board, June 1, 2013</ref> of twins at 4 weeks demonstrates :

Apologists who are fond of leech metaphors should consider that unlike a leech, which simply sucks blood from its host, the embryo circulates and exchanges blood and waste products with its mother.<ref>Barry Mitchell & Ram Sharma 2009. Embryology: An Illustrated Colour Text. Second Edition. Churchill Livingstone ElSevier. Page 10-11</ref> A leech has many characteristics such as size, behaviour, shape, color, appearance. Why would the author use 'alaqah intending such a metaphorical meaning when his listeners could not be expected to know in what respect the analogy applies? It is a typical Texan Sharpshooter fallacy<ref>{{cite web|quote= The Texas sharpshooter fallacy is an informal fallacy in which pieces of information that have no relationship to one another are called out for their similarities, and that similarity is used for claiming the existence of a pattern. This fallacy is the philosophical/rhetorical application of the multiple comparisons problem (in statistics) and apophenia (in cognitive psychology). It is related to the clustering illusion, which refers to the tendency in human cognition to interpret patterns where none actually exist. The name comes from a joke about a Texan who fires some shots at the side of a barn, then paints a target centered on the biggest cluster of hits and claims to be a sharpshooter.|url= http://en.wikipedia.org/wiki/Texas_sharpshooter_fallacy|title= Texas sharpshooter fallacy|publisher= Wikipedia|author= |date= accessed August 13, 2013|archiveurl= http://www.webcitation.org/query?url=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FTexas_sharpshooter_fallacy&date=2013-08-13|deadurl=no}}</ref> of apologists to choose one characteristic - shape - then to an arbitrarily very limited degree find a similarity with an embryo, and draw any conclusions, particularly as the early embryo passes through a wide range of shapes and is itself a biological organism. Moreover, such apologetics have to conveniently ignore the embryo's yolk sac, which gradually becomes incorporated into its developing gut, when depicting the embryo.

Mesoderm is the middle of the three layers of the early embryo. Some of the mesoderm cells form a series of blocks called somites either side of the neural tube (this tube will eventually form the spinal cord and brain). These somites will differentiate into sclerotome and myotome, which form the cartilage 'models' (or 'templates') and become connective tissues (including muscles) respectively of the future axial skeleton (i.e. everything except the limbs, shoulders and pelvis). The myotome differentiates and migrates as the sclerotome is condensing into mesenchyme, which will produce cartilage. Each process occurs segmentally down the somites in a cranio-caudal sequence (head to tail).

Another area of mesoderm (lateral plate mesoderm) proliferates especially quickly in certain positions to form the limb buds. There, mesenchyme cells condense into distinct masses within the limb buds. These mesenchyme cells differentiate into chondrocytes, which secrete the cartilage matrix and are embedded in it. Thus cartilage models of the future limb bones gradually form (chondrification). Once the cartilage models have formed and while they are still growing, the cartilage is literally replaced with actual bone by osteoblasts (ossification) working outwards from centres of the cartilage models. Osteoclasts remove the remnants of the mineralized cartilage. Ossification also starts in the axial skeleton some time after it has begun in the limbs, except for the upper and lower jaw, which start to ossify slightly earlier.

Meanwhile, the process of limb muscle formation begins as soon as the limb buds appear. Myoblast cells migrate from somites to populate the limb buds. They aggregate into distinct masses, differentiating and fusing into muscle fibres, as the condensing mesenchyme starts to chondrify, and before the resulting cartilage models begin to ossify.  

* True Gonadal intersex. Such people have both male and female gonads (ovaries and testes), and may have ambiguous external genitalia.

===Womb has Three Layers===

The word butun (بطن)<ref>بطن butun - [[http://www.studyquran.org/LaneLexicon/Volume1/00000257.pdf Lane's Lexicon] Volume 1, page 220</ref> means belly/abdomen/midriff, though some translators like to use the more specific word "womb". There are many more layers in the human body such as the endometrium, myometrium, perimetrium, peritoneum, besides the cervix uteri, corpus uteri, abdomen (with walls), and placenta (with layers). The idea of three membranes around the fetus (chorion, allantois, and amnion) was taught by the highly influential Greek physician, Galen. It is likely that the Qur'anic author is simply repeating this erroneous idea.

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)? }}

# The Qur'anic view of cell differentiation at the Mudgha stage is incorrect, as modern embryology has discovered cell differentiation occurring before and after the putative ‘Mudgha’ stage.