Motor neuron
A motor neuron is a type of neuron that transmits signals from the central nervous system to muscles or glands. They tend to have a myelin sheath around their axon. However, this varies between neurons.
Becker W., Hardin J., Bertoni G., and Kleinsmith L. (2012) Becker’s World Of The Cell, 8th Edition, San Francisco: Pearson Education. Page 365 & 366