motoneuron

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Related to Motoneurons: Motor nerves, somatic 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.
References in periodicals archive ?
However, there has been no molecular evidence for the existence of NMDA receptors in these motoneurons until now.
The authors concluded that a motoneurons were augmented by the vibration, which recruited high-threshold units and muscle fibres (Rittweger et al.
15 M lithium chloride) was injected into putative swim motoneurons by passing 0.
Moreover, the effect of EL on BDNF protein regulation in SNB motoneurons not studied.
Synaptic organization of the vestibulo collie pathways from six semicircular canals to motoneurons of different neck muscles.
Assessing the spastic condition of individuals with upper motoneuron involvement: Validity of the myotonometer.
The signal obtained is extracellular activity of motoneurons constituting the nerve (Figure 4A).
Ciliary neurotrophic factor is an early lesion-induced retrograde signal for axotomized facial motoneurons.
Although cerebral palsy is usually diagnosed as any nonprogressive central nervous system injury which occurred below the age of two (Berker and Yalcin 2005; Renshaw and Deluca 2006), aetiological agents could also afflict the central motoneurons chronologically after the defined age producing the same clinical manifestations during childhood.
Dental pulp cells produce neurotrophic factors, interact with trigeminal neurons in vitro, and rescue motoneurons after spinal cord injury.
7]) are largely responsible for tonic inhibition of extensor muscle alpha motoneurons in cervical intumescence.