The process by which the beginnings of the vertebrate nervous system is formed in embryos.
Neurulation is the stage of organogenesis in vertebrate embryos, during which the neural tube is transformed into the primitive structures that will later develop into the central nervous system. The process begins when the notochord induces the formation of the central nervous system by signaling the ectoderm germ layer above it to form the thick and flat neural plate. The neural plate folds in upon itself to form the neural tube, which will later differentiate into the spinal cord and the brain, eventually forming the central nervous system. Different portions of the neural tube form by two different processes, called primary and secondary neurulation, in different species. ⁕In primary neurulation, the neural plate creases inward until the edges come in contact and fuse. ⁕In secondary neurulation, the tube forms by hollowing out of the interior of a solid precursor.
U.S. National Library of Medicine
An early embryonic developmental process of CHORDATES that is characterized by morphogenic movements of ECTODERM resulting in the formation of the NEURAL PLATE; the NEURAL CREST; and the NEURAL TUBE. Improper closure of the NEURAL GROOVE results in congenital NEURAL TUBE DEFECTS.
The numerical value of Neurulation in Chaldean Numerology is: 9
The numerical value of Neurulation in Pythagorean Numerology is: 6
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- تكون العصيبةArabic
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"Neurulation." Definitions.net. STANDS4 LLC, 2018. Web. 17 Mar. 2018. <https://www.definitions.net/definition/Neurulation>.