definition of lower motor neuron
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A nerve cell that goes from the spinal cord to a muscle. The cell body of a lower motor neuron is in the spinal cord and its termination is in a skeletal muscle. The loss of lower motor neurons leads to weakness, twitching of muscles. It is the efferent neuron of the peripheral nervous system,glands, and cardiac muscle
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Lower motor neurons (LMNs) aremotor neurons located in either the anterior grey column, anterior nerve roots (spinal lower motor neurons) or the cranial nerve nuclei of the brainstem and cranial nerves withmotor function (cranial nerve lower motor neurons).
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