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.
Brain Bytes showcase essential facts about neuroscience.
Design by A. Tong
Design by Adrienne Tong.
Image: Fayette A. Reynolds, Berkshire Community College Bioscience Image Library