Motor neurons carry movement instructions from the brain and spinal cord to muscles throughout the body. Their nerve fibers are the longest in the body — a single axon can stretch from the base of the spinal cord all the way to the toes.
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Design by Adrienne Tong.
Image: Fayette A. Reynolds, Berkshire Community College Bioscience Image Library
About the Author
Calli McMurray is a former Media & Science Writing Associate at SfN. She graduated from the University of Texas at Austin in 2019 with a Bachelor of Science in Neuroscience.
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