| 释义 |
motoneuronenUK
mo·to·neu·ron M0442300 (mō′tə-no͝or′ŏn′, -nyo͝or′-)n. A motor neuron.
[moto(r) + neuron.]motoneuron (ˌməʊtəʊˈnjʊərɒn) n (Anatomy) anatomy an efferent nerve cell; motor neuronmo′tor neu`ron or motoneuron
n. a nerve cell that conducts impulses to a muscle, gland, or other effector. [1895–1900] Thesaurus| Noun | 1. |  motoneuron - a neuron conducting impulses outwards from the brain or spinal cordefferent neuron, motor nerve fiber, motor neuronnerve cell, neuron - a cell that is specialized to conduct nerve impulsesefferent, efferent nerve, motor nerve - a nerve that conveys impulses toward or to muscles or glands |
motoneuronenUK
motoneuron[¦mōd·ə′nu̇r‚än] (physiology) motor neuron motoneuronenUK
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.mo·tor neu·rona nerve cell in the spinal cord, rhombencephalon, or mesencephalon characterized by having an axon that leaves the central nervous system to establish a functional connection with an effector (muscle or glandular) tissue; somatic motor neuron directly synapse with striated muscle fibers by motor endplates; visceral motor neuron or autonomic motor neuron (preganglionic m. neurons), by contrast, innervate smooth muscle fibers or glands only by the intermediary of a second, peripheral, neuron (postganglionic m. neuron) located in an autonomic, or visceral motor, ganglion.
See also: motor endplate, autonomic (visceral motor) division of nervous system. Synonym(s): anterior horn cell, motoneuronmotoneuron (mō′tə-no͝or′ŏn′, -nyo͝or′-)n. A motor neuron.mo·tor neu·ron (mō'tŏr nūr'on) A nerve cell in the spinal cord, rhombencephalon, or mesencephalon characterized by an axon that leaves the central nervous system to establish a functional connection with an effector (muscle or glandular) tissue; somatic motor neurons directly synapse with striated muscle fibers by motor endplates; visceral motor neurons or autonomic motor neurons (preganglionic motor neurons), by contrast, innervate smooth muscle fibers or glands only by the intermediary of a second, peripheral, neuron (postganglionic or ganglionic motor neuron) located in an autonomic ganglion.
See also: motor endplate, autonomic division of nervous system
Synonym(s): motoneuron, motoneurone. mo·tor neu·ron (mō'tŏr nūr'on) A nerve cell in the spinal cord, rhombencephalon, or mesencephalon characterized by an axon that leaves the central nervous system to establish a functional connection with an effector (muscle or glandular) tissue.
Synonym(s): motoneuron, motoneurone. motoneuronenUK
Related to motoneuron: Motor neuronsSynonyms for motoneuronnoun a neuron conducting impulses outwards from the brain or spinal cordSynonyms- efferent neuron
- motor nerve fiber
- motor neuron
Related Words- nerve cell
- neuron
- efferent
- efferent nerve
- motor nerve
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