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Neural tube


Neural tube
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Embryology: Neural tube ...
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Neural tube
[L. neuralis - nerve]. A tube of tissue formed by a thickening and rolling up of the neural plate during embryonic neurulation. It will later form the brain and spinal cord of the animal.
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A congenital defect of the central nervous system, including the spinal cord, skull and brain, resulting from failure of the neural tube to properly close during fetal development.
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Neural tube defects
Normally the closure of the neural tube occurs around the 30th day after fertilization. However, if something interferes and the tube fails to close properly, a neural tube defect will occur.
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neural tube A tube of ectoderm in the embryo that will form the spinal cord.
neuromuscular junction The point where a motor neuron attaches to a muscle cell.
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neural tube
Primitive, hollow, dorsal nervous system of the early vertebrate embryo; formed by fusion of neural folds around the neural groove.
neuromodulator ...
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neural tube defects (spina bifida, anencephaly)
cleft lip/palate
The Biology Web (Home) General Biology 1 General Biology 2 Human Biology Environmental Science ...
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neural tube - hollow cylindrical structure of neuroepithelial cells that will give rise to the brain and spinal cord; an ectodermal derivative.
neuroblast - dividing neuronal precursor cell
neurula - vertebrate embryo during neurulation.
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Development of the neural tube starts from the neuroepithelium, which is a flat sheet of cells and it has the underlying mesoderm derivative of the notochord. The spinal chord, which ultimately is formed from the neural tube, is a solid rod.
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" Note that this definition does not include proteins, so it excludes some newborn screening, prenatal tests for neural tube defects, and many tests currently used by geneticists to make diagnoses.
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This ectoderm grows up into two longitudinal folds, forming the neural folds stage.
In time the lips of the folds fuse to form the neural tube.
The neural tube eventually develops into the brain and spinal cord.
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FolicAcid a B vitamin noted for its prevention of neural tube defects if taken in early pregnancy
(foli = a leaf)
Fossil the preserved remains of a formerly-living (prehistoric) organism
(foss = ditch trench; fossil = dug up) ...
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neurulation External changes along the upper surface of a chordate embryo that result in the formation of the neural tube.
neuston Organisms that live on the surface of the sea.
neutral selection See genetic drift.
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neurula
The stage of a vertebrate embryo when gastrulation is largely finished and a neural plate is forming, ending with formation of the neural tube.
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