motor neuron, one of various efferent nerve cells that transmit nerve impulses from the brain or from the spinal cord to muscular or glandular tissue. According to location, some kinds of motor neurons are the peripheral motor neurons and the upper motor neurons. Also called motoneuron.
The Zimmerman telegram probably had a peripheral effect on breaking the isolationist sentiment in the US in WWI. Relations with Mexico were strained already (Veracruz was occupied) but once Huerta was gone, the Mexican neutrality in the World Wa...
In February the British gave the American ambassador in London a copy of an intercepted German telegram. The telegram came from the German Foreign Secretary, Arthur Zimmerman, to the German ambassador to Mexico. Zimmerman proposed that in the event of war with the US, Germany and Mexico would join in an alliance. Germany would fund Mexico's conflict with the US. With victory achieved, Mexico would regain her lost territories of Arizona, Texas and New Mexico.