neuron(redirected from preganglionic n's)
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1. Any of the impulse-conducting cells that constitute the brain, spinal column, and nerves in vertebrates, consisting of a nucleated cell body with one or more dendrites and a single axon.
2. A similar impulse-conducting cell in invertebrates. In both senses also called nerve cell.
neu′ro·nal (no͝or′ə-nəl, nyo͝or′-, no͝o-rōn′l, nyo͝o-), neu·ron′ic adj.
neu•ron(ˈnʊər ɒn, ˈnyʊər-)
a specialized, impulse-conducting cell that is the functional unit of the nervous system, consisting of the cell body and its processes, the axon and dendrites.Also called nerve cell. Also, esp. Brit.,neu•rone (-oʊn)
[1880–85; < Greek neûron sinew, cord, nerve]
neu•ron•al (ˈnʊər ə nl, ˈnyʊər-, nʊˈroʊn l, nyʊ-) adj.
See nerve cell.
A cell that conveys electrochemical impulses. Neurons form the basic units of the nervous system. See axon, dendrites.
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|Noun||1.||neuron - a cell that is specialized to conduct nerve impulses|
gangliocyte, ganglion cell - a nerve cell whose body is outside the central nervous system; "damage to ganglion cells in the retina may play a role in the development of glaucoma"
somatic cell, vegetative cell - any of the cells of a plant or animal except the reproductive cells; a cell that does not participate in the production of gametes; "somatic cells are produced from preexisting cells";
nervous system, systema nervosum - the sensory and control apparatus consisting of a network of nerve cells
brain cell - a nerve cell in the brain
efferent neuron, motoneuron, motor nerve fiber, motor neuron - a neuron conducting impulses outwards from the brain or spinal cord
dendrite - short fiber that conducts toward the cell body of the neuron