<P> A motor neuron ( or motoneuron ) is a neuron whose cell body is located in the motor cortex , brainstem or the spinal cord , and whose axon ( fiber ) projects to the spinal cord or outside of the spinal cord to directly or indirectly control effector organs , mainly muscles and glands . There are two types of motor neuron -- upper motor neurons and lower motor neurons . Axons from upper motor neurons synapse onto interneurons in the spinal cord and occasionally directly onto lower motor neurons . The axons from the lower motor neurons are efferent nerve fibers that carry signals from the spinal cord to the effectors . Types of lower motor neurons are alpha motor neurons , beta motor neurons , and gamma motor neurons . </P>
<P> A motor neuron ( or motoneuron ) is a neuron whose cell body is located in the motor cortex , brainstem or the spinal cord , and whose axon ( fiber ) projects to the spinal cord or outside of the spinal cord to directly or indirectly control effector organs , mainly muscles and glands . There are two types of motor neuron -- upper motor neurons and lower motor neurons . Axons from upper motor neurons synapse onto interneurons in the spinal cord and occasionally directly onto lower motor neurons . The axons from the lower motor neurons are efferent nerve fibers that carry signals from the spinal cord to the effectors . Types of lower motor neurons are alpha motor neurons , beta motor neurons , and gamma motor neurons . </P>
where are the cell bodies of efferent motor neurons found
where are the cell bodies of efferent motor neurons found
spinal cord
spinal cord