what uses an upper motor neuron and a lower motor neuron?
Upper Motor Neurones (UMN), Lower Motor Neurone (LMN) and their Lesions. All the neurons contributing to the pyramidal and extrapyramidal systems should be called upper motor neurons (UMN). The anterior horn cells and the related neurons in the motor nuclei of some cranial nerves are called lower motor neurons (LMN). Axons of these cells give rise to the peripheral motor nerves.