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			<gallery>
			File:Gray18.png\|Neural_fold
			File:Embryonic_Development_CNS.png\|Neural_fold
			File:Embryonic_Development_CNS.gif\|Neural_fold
			File:Gray16.png\|Neural_fold
			File:Anencephaly_side.jpg\|Neural_fold
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'''Neural Fold'''

The '''Neural Fold''' is a structure that forms early in embryonic development and plays a crucial role in the formation of the [[neural tube]], which later develops into the [[central nervous system]] (CNS). The neural fold is a key component of the process known as [[neurulation]], which is the embryonic phase where the neural tube is formed.

== Formation ==

The neural fold forms during the third week of embryonic development. It begins as a thickening of the [[ectoderm]], the outermost layer of the embryo, which is induced by the underlying [[notochord]]. This thickened region is known as the [[neural plate]]. The edges of the neural plate then begin to elevate to form the neural folds.

== Role in Neurulation ==

The neural folds play a critical role in neurulation. After their formation, the neural folds begin to move towards each other and eventually fuse at the midline to form the neural tube. This process is known as [[neural tube closure]]. The neural tube will eventually give rise to the CNS, which includes the [[brain]] and [[spinal cord]].

== Clinical Significance ==

Abnormalities in the formation of the neural fold can lead to [[neural tube defects]] (NTDs), which are among the most common birth defects. NTDs can result in a range of conditions, from mild to severe, including [[spina bifida]] and [[anencephaly]].

== See Also ==

* [[Neurulation]]
* [[Neural Plate]]
* [[Neural Tube]]
* [[Neural Tube Defects]]
* [[Spina Bifida]]
* [[Anencephaly]]

== References ==

<references />

[[Category:Embryology]]
[[Category:Developmental biology]]
[[Category:Neuroscience]]
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Neural fold - Revision history

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