lower motor neuron

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low·er mo·tor neu·ron

clinical term used to indicate the final motor neurons with axons that innervate the skeletal muscles; distinguished from upper motor neurons of the motor cortex that contribute to the corticospinal tract.
See also: motor neuron.

low·er mo·tor neu·ron

(lō'ĕr mō'tŏr nūr'on)
The final motor neurons that innervate skeletal muscles; distinguished from upper motor neurons of the motor cortex that contribute to the pyramidal or corticospinal tract.
See also: motor neuron

lower motor neuron

A peripheral motor neuron that originates in the ventral horns of the gray matter of the spinal cord and terminates in skeletal muscles. Lesions of these neurons produce flaccid paralysis of the muscles they innervate. Synonym: lower motoneuron
See also: neuron
References in periodicals archive ?
It is a progressive disease attacking the upper and lower motor neurones leading to weakness and wasting of muscles, causing increased loss of mobility and difficulties with swallowing, breathing and speech.
Amyotrophic Lateral Sclerosis (ALS) is the most common form and involves both the upper and lower motor neurones.
Progressive Bulbar Palsy (PBP) affects about 25 percent of sufferers and also involves both the upper and lower motor neurones but is characterised by dysarthria and dysphagia, and predominantly affects older women.
ALS is the most common motor neurone disease resulting from progressive degeneration of both upper and lower motor neurones which lead to severe muscle weakness and wasting, followed by paralysis and death, generally caused by respiratory failure.
It is a progressive neurological condition that attacks the upper and lower motor neurones.

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