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Motor Units

Motor Units

A motor unit consists of two main components: a single efferent motor neuron (i.e., a neuron that carries impulses away from the central nervous system) and all of the muscle fibers it innervates. The motor neuron may innervate multiple muscle fibers, which are single cells, but only one motor neuron innervates a single muscle fiber.

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Related Experiment Video

Updated: Mar 1, 2026

Extracellularly Identifying Motor Neurons for a Muscle Motor Pool in Aplysia californica

Extracellularly Identifying Motor Neurons for a Muscle Motor Pool in Aplysia californica

Published on: March 25, 2013

A cell-type-specific jolt for motor disorders

Yu-Wei Wu¹, Jun B Ding¹

¹Department of Neurosurgery and the Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Palo Alto, California, USA.

Nature Neuroscience

|May 26, 2017

Summary

No abstract available in PubMed .

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