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motoneuron |
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motoneuron /mo·to·neu·ron/ (mōt″o-nldbomacr´on) motor neuron; a neuron having a motor function; an efferent neuron conveying motor impulses.
lower motoneuron a peripheral neuron whose cell body lies in the ventral gray columns of the spinal cord and whose termination is in a skeletal muscle. peripheral motoneuron in a reflex arc, a motoneuron that receives impulses from interneurons. upper motoneuron a neuron in the cerebral cortex that conducts impulses from the motor cortex to a motor nucleus of one of the cerebral nerves or to a ventral gray column of the spinal cord.
motoneuron [mō′tōnoo͡r′on] Etymology: L, movere, to move; Gk, neuron, nerve a motor neuron. Its function is to produce muscle contractions. motoneuron [mo″to-noor´on] a neuron having a motor function; an efferent neuron conveying motor impulses. Called also motor neuron. lower motoneuron a peripheral neuron whose cell body lies in the ventral gray columns of the spinal cord and whose termination is in a skeletal muscle. peripheral m's neurons in a peripheral reflex arc that receive impulses from interneurons and transmit them to voluntary muscles. upper motoneuron a neuron in the cerebral cortex that conducts impulses from the motor cortex to a motor nucleus of one of the cerebral nerves or to a ventral gray column of the spinal cord. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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