motor neurone

motor neurone
one of the units (neurone) that goes to make up the nerve pathway between the brain and an effector organ, such as a skeletal muscle. An upper motor neurone has a cell body in the brain and an axon that extends into the spinal cord, where it ends in synapses. It is thus entirely within the central nervous system. A lower motor neurone, on the other hand, has a cell body in the spinal cord or brainstem and an axon that extends outwards in a cranial or spinal motor nerve to reach an effector.

Medical dictionary. 2011.

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  • motor neurone — motor neuron or motor neurone noun (anatomy) A neuron conveying a voluntary or motor impulse • • • Main Entry: ↑motor …   Useful english dictionary

  • motor neurone — one of the units (neurones) that goes to make up the nerve pathway between the brain and an effector organ, such as a skeletal muscle. An upper motor neurone has a cell body in the brain and an axon that extends into the spinal cord, where it… …   The new mediacal dictionary

  • Motor neurone disease — Classification and external resources spinal diagram ICD 10 G12.2 …   Wikipedia

  • motor neurone disease — noun A disease in which progressive damage to motor neurones leads to muscle weakness and degeneration • • • Main Entry: ↑motor * * * motor neurone disease UK US noun [uncountable] a serious illness in which the part of a person’s nervous system… …   Useful english dictionary

  • Motor Neurone Disease Association — The Motor Neurone Disease Association (MND Association) is a British charity, operating in England, Wales and Northern Ireland, established in 1979 by a group of volunteers to coordinate care, support, and research for people affected by motor… …   Wikipedia

  • motor neurone disease — (MND) a progressive degenerative disease of the motor system occurring in middle age and causing muscle weakness and wasting. It primarily affects the cells of the anterior horn of the spinal cord, the motor nuclei in the brainstem, and the… …   Medical dictionary

  • motor neurone disease — MND a progressive degenerative disease of the motor system occurring in middle age and causing muscle weakness and wasting. It primarily affects the cells of the anterior horn of the spinal cord, the motor nuclei in the brainstem, and the… …   The new mediacal dictionary

  • motor neurone disease — N UNCOUNT Motor neurone disease is a disease which destroys the part of a person s nervous system that controls movement …   English dictionary

  • motor neurone disease — motor neu|rone dis|ease [ˌməutə ˈnjuərəun dıˌzi:z US ˌmoutər ˈnuroun ] n [U] a serious disease that causes a gradual loss of control over the muscles and nerves of the body, resulting in death …   Dictionary of contemporary English

  • motor neurone disease — noun a disease of the motor neurons of the spinal cord, in which the nerve cells atrophy. Also, MND, motor neuron disease. Usage: In general, the spelling neuron has gained precedence over neurone in Australian English. However, corpus evidence… …  

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