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Neural Conduction
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D009431 |
[The propagation of the NERVE IMPULSE along the nerve away from the site of an excitation stimulus.
] |
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Neural Crest
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D009432 |
[Neuroectodermal cells of the neural crest. They differentiate into various cell types during EMBRYOGENESIS including craniofacial MESENCHYME; ENDOCRINE CELLS; MELANOCYTES and PERIPHERAL NERVOUS SYSTEM.
, The two longitudinal ridges along the PRIMITIVE STREAK appearing near the end of GASTRULATION during development of nervous system (NEURULATION). The ridges are formed by folding of NEURAL PLATE. Between the ridges is a neural groove which deepens as the fold become elevated. When the folds meet at midline, the groove becomes a closed tube, the NEURAL TUBE.
] |
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Neural Inhibition
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D009433 |
[The function of opposing or restraining the excitation of neurons or their target excitable cells.
] |
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Neural Networks, Computer
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D016571 |
[A computer architecture, implementable in either hardware or software, modeled after biological neural networks. Like the biological system in which the processing capability is a result of the interconnection strengths between arrays of nonlinear processing nodes, computerized neural networks, often called perceptrons or multilayer connectionist models, consist of neuron-like units. A homogeneous group of units makes up a layer. These networks are good at pattern recognition. They are adaptive, performing tasks by example, and thus are better for decision-making than are linear learning machines or cluster analysis. They do not require explicit programming.
] |
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Neural Pathways
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D009434 |
[Neural tracts connecting one part of the nervous system with another.
] |
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Neural Plate
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D054258 |
[The region in the dorsal ECTODERM of a chordate embryo that gives rise to the future CENTRAL NERVOUS SYSTEM. Tissue in the neural plate is called the neuroectoderm, often used as a synonym of neural plate.
] |
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Neural Prostheses
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D058117 |
[Medical devices which substitute for a nervous system function by electrically stimulating the nerves directly and monitoring the response to the electrical stimulation.
] |
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Neural Stem Cells
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D058953 |
[Self-renewing cells that generate the main phenotypes of the nervous system in both the embryo and adult. Neural stem cells are precursors to both NEURONS and NEUROGLIA.
] |
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Neural Tube
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D054259 |
[A tube of ectodermal tissue in an embryo that will give rise to the CENTRAL NERVOUS SYSTEM, including the SPINAL CORD and the BRAIN. Lumen within the neural tube is called neural canal which gives rise to the central canal of the spinal cord and the ventricles of the brain. For malformation of the neural tube, see NEURAL TUBE DEFECTS.
] |
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Neural Tube Defects
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D009436 |
[Congenital malformations of the central nervous system and adjacent structures related to defective neural tube closure during the first trimester of pregnancy generally occurring between days 18-29 of gestation. Ectodermal and mesodermal malformations (mainly involving the skull and vertebrae) may occur as a result of defects of neural tube closure. (From Joynt, Clinical Neurology, 1992, Ch55, pp31-41)
] |
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Neuralgia
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D009437 |
[Intense or aching pain that occurs along the course or distribution of a peripheral or cranial nerve.
] |
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Neuralgia, Postherpetic
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D051474 |
[Pain in nerves, frequently involving facial SKIN, resulting from the activation the latent varicella-zoster virus (HERPESVIRUS 3, HUMAN). The two forms of the condition preceding the pain are HERPES ZOSTER OTICUS; and HERPES ZOSTER OPHTHALMICUS. Following the healing of the rashes and blisters, the pain sometimes persists.
] |
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Neuraminic Acids
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D009438 |
[Nine-carbon deoxyamino SUGAR ACIDS that are substrates for NEURAMINIDASE. Their derivatives include SIALIC ACIDS.
] |
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Neuraminidase
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D009439 |
[An enzyme that catalyzes the hydrolysis of alpha-2,3, alpha-2,6-, and alpha-2,8-glycosidic linkages (at a decreasing rate, respectively) of terminal sialic residues in oligosaccharides, glycoproteins, glycolipids, colominic acid, and synthetic substrate. (From Enzyme Nomenclature, 1992)
] |
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Neurasthenia
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D009440 |
[A mental disorder characterized by chronic fatigue and concomitant physiologic symptoms.
] |
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Neuregulin-1
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D020890 |
[A peptide factor originally identified by its ability to stimulate the phosphorylation the erbB-2 receptor (RECEPTOR, ERBB-2). It is a ligand for the erbB-3 receptor (RECEPTOR, ERBB-3) and the erbB-4 receptor. Variant forms of NEUREGULIN-1 occur through alternative splicing of its mRNA.
] |
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Neuregulins
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D020880 |
[A family of peptides originally found as factors that stimulate the phosphorylation of the erbB-2 receptor (RECEPTORS, ERBB-2). Multiple variant forms of NEUREGULINS occur due to alternative splicing of their mRNAs. The NEUREGULINS include products from the three known genes (NGR1; NGR2 and NGR3).
] |
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Neurilemma
|
D009441 |
[The outermost cytoplasmic layer of the SCHWANN CELLS covering NERVE FIBERS.
] |
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Neurilemmoma
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D009442 |
[A neoplasm that arises from SCHWANN CELLS of the cranial, peripheral, and autonomic nerves. Clinically, these tumors may present as a cranial neuropathy, abdominal or soft tissue mass, intracranial lesion, or with spinal cord compression. Histologically, these tumors are encapsulated, highly vascular, and composed of a homogenous pattern of biphasic fusiform-shaped cells that may have a palisaded appearance. (From DeVita Jr et al., Cancer: Principles and Practice of Oncology, 5th ed, pp964-5)
] |
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Neurites
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D016501 |
[In tissue culture, hairlike projections of neurons stimulated by growth factors and other molecules. These projections may go on to form a branched tree of dendrites or a single axon or they may be reabsorbed at a later stage of development. "Neurite" may refer to any filamentous or pointed outgrowth of an embryonal or tissue-culture neural cell.
] |
