motoneuron

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Related to peripheral motoneuron: Lower motor neuron disease, Gamma motor neuron

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·ron

a 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.

motoneuron

/mo·to·neu·ron/ (mōt″o-nldbomacr´on) motor neuron; a neuron having a motor function; an efferent neuron conveying motor impulses.
Enlarge picture
Motoneuron shown as the efferent neuron in a three-neuron reflex arc.

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′tə-no͝or′ŏn′, -nyo͝or′-)
n.
A motor neuron.

motoneuron

[mō′tōnoo͡r′on]
Etymology: L, movere, to move; Gk, neuron, nerve
a motor neuron. Its function is to produce muscle contractions.

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.
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