physi_ofit

Lower motor neuron: A nerve cell that goes from the spinal cord to a muscle. The cell body of a lower motor neuron is in the spinal cord and its termination is in a skeletal muscle. 

Lower motor neurons are in your brain stem and spinal cord. When they get a signal from the upper motor neurons, they send another signal to your muscles to make them contract.

Motor neurons are nerve cells in your brain and spinal cord that control movement. They tell your muscles to squeeze (or "contract") so you can walk, talk, and move your body.

Upper motor neurons are located in your brain and spinal cord. They send signals to lower motor neurons.